78000280

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{101}}^1\times {\mathrm{449}}^1$

素因数の和:604

約数の個数: 64

約数和(自身を含む): 181764000

約数和(自身を除く): 103763720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 101, 172, 202, 215, 344, 404, 430, 449, 505, 808, 860, 898, 1010, 1720, 1796, 2020, 2245, 3592, 4040, 4343, 4490, 8686, 8980, 17372, 17960, 19307, 21715, 34744, 38614, 43430, 45349, 77228, 86860, 90698, 96535, 154456, 173720, 181396, 193070, 226745, 362792, 386140, 453490, 772280, 906980, 1813960, 1950007, 3900014, 7800028, 9750035, 15600056, 19500070, 39000140, 78000280]

約数ペア:

[(1, 78000280), (2, 39000140), (4, 19500070), (5, 15600056), (8, 9750035), (10, 7800028), (20, 3900014), (40, 1950007), (43, 1813960), (86, 906980), (101, 772280), (172, 453490), (202, 386140), (215, 362792), (344, 226745), (404, 193070), (430, 181396), (449, 173720), (505, 154456), (808, 96535), (860, 90698), (898, 86860), (1010, 77228), (1720, 45349), (1796, 43430), (2020, 38614), (2245, 34744), (3592, 21715), (4040, 19307), (4343, 17960), (4490, 17372), (8686, 8980)]