The factors of the number 320,072,220 are: 1, 2, 3, 4, 5, 6, 9, 10, 12, 13, 15, 18, 20, 26, 30, 36, 39, 43, 45, 52, 60, 65, 78, 86, 90, 117, 129, 130, 156, 172, 180, 195, 215, 234, 258, 260, 387, 390, 430, 468, 516, 559, 585, 645, 774, 780, 860, 1118, 1170, 1290, 1548, 1677, 1935, 2236, 2340, 2580, 2795, 3181, 3354, 3870, 5031, 5590, 6362, 6708, 7740, 8385, 9543, 10062, 11180, 12724, 15905, 16770, 19086, 20124, 25155, 28629, 31810, 33540, 38172, 41353, 47715, 50310, 57258, 63620, 82706, 95430, 100620, 114516, 124059, 136783, 143145, 165412, 190860, 206765, 248118, 273566, 286290, 372177, 410349, 413530, 496236, 547132, 572580, 620295, 683915, 744354, 820698, 827060, 1231047, 1240590, 1367830, 1488708, 1641396, 1778179, 1860885, 2051745, 2462094, 2481180, 2735660, 3556358, 3721770, 4103490, 4924188, 5334537, 6155235, 7112716, 7443540, 8206980, 8890895, 10669074, 12310470, 16003611, 17781790, 21338148, 24620940, 26672685, 32007222, 35563580, 53345370, 64014444, 80018055, 106690740, 160036110, 320072220.
If you add them up, you will get the total of 1,070,221,152.