656968520

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{409}}^1\times {\mathrm{3089}}^1$

素因数の和:3522

約数の個数: 64

約数和(自身を含む): 1596294000

約数和(自身を除く): 939325480

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 409, 520, 818, 1636, 2045, 3089, 3272, 4090, 5317, 6178, 8180, 10634, 12356, 15445, 16360, 21268, 24712, 26585, 30890, 40157, 42536, 53170, 61780, 80314, 106340, 123560, 160628, 200785, 212680, 321256, 401570, 803140, 1263401, 1606280, 2526802, 5053604, 6317005, 10107208, 12634010, 16424213, 25268020, 32848426, 50536040, 65696852, 82121065, 131393704, 164242130, 328484260, 656968520]

約数ペア:

[(1, 656968520), (2, 328484260), (4, 164242130), (5, 131393704), (8, 82121065), (10, 65696852), (13, 50536040), (20, 32848426), (26, 25268020), (40, 16424213), (52, 12634010), (65, 10107208), (104, 6317005), (130, 5053604), (260, 2526802), (409, 1606280), (520, 1263401), (818, 803140), (1636, 401570), (2045, 321256), (3089, 212680), (3272, 200785), (4090, 160628), (5317, 123560), (6178, 106340), (8180, 80314), (10634, 61780), (12356, 53170), (15445, 42536), (16360, 40157), (21268, 30890), (24712, 26585)]