665655380

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{2560213}}^1$

素因数の和:2560235

約数の個数: 24

約数和(自身を含む): 1505405832

約数和(自身を除く): 839750452

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 2560213, 5120426, 10240852, 12801065, 25602130, 33282769, 51204260, 66565538, 133131076, 166413845, 332827690, 665655380]

約数ペア:

[(1, 665655380), (2, 332827690), (4, 166413845), (5, 133131076), (10, 66565538), (13, 51204260), (20, 33282769), (26, 25602130), (52, 12801065), (65, 10240852), (130, 5120426), (260, 2560213)]