156780765640

素因数分解:

$2^3\times 5^1\times {\mathrm{661}}^1\times {\mathrm{2143}}^1\times {\mathrm{2767}}^1$

素因数の和:5582

約数の個数: 64

約数和(自身を含む): 353582991360

約数和(自身を除く): 196802225720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 661, 1322, 2143, 2644, 2767, 3305, 4286, 5288, 5534, 6610, 8572, 10715, 11068, 13220, 13835, 17144, 21430, 22136, 26440, 27670, 42860, 55340, 85720, 110680, 1416523, 1828987, 2833046, 3657974, 5666092, 5929681, 7082615, 7315948, 9144935, 11332184, 11859362, 14165230, 14631896, 18289870, 23718724, 28330460, 29648405, 36579740, 47437448, 56660920, 59296810, 73159480, 118593620, 237187240, 3919519141, 7839038282, 15678076564, 19597595705, 31356153128, 39195191410, 78390382820, 156780765640]

約数ペア:

[(1, 156780765640), (2, 78390382820), (4, 39195191410), (5, 31356153128), (8, 19597595705), (10, 15678076564), (20, 7839038282), (40, 3919519141), (661, 237187240), (1322, 118593620), (2143, 73159480), (2644, 59296810), (2767, 56660920), (3305, 47437448), (4286, 36579740), (5288, 29648405), (5534, 28330460), (6610, 23718724), (8572, 18289870), (10715, 14631896), (11068, 14165230), (13220, 11859362), (13835, 11332184), (17144, 9144935), (21430, 7315948), (22136, 7082615), (26440, 5929681), (27670, 5666092), (42860, 3657974), (55340, 2833046), (85720, 1828987), (110680, 1416523)]