638430

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{1637}}^1$

素因数の和:1660

約数の個数: 32

約数和(自身を含む): 1651104

約数和(自身を除く): 1012674

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 390, 1637, 3274, 4911, 8185, 9822, 16370, 21281, 24555, 42562, 49110, 63843, 106405, 127686, 212810, 319215, 638430]

約数ペア:

[(1, 638430), (2, 319215), (3, 212810), (5, 127686), (6, 106405), (10, 63843), (13, 49110), (15, 42562), (26, 24555), (30, 21281), (39, 16370), (65, 9822), (78, 8185), (130, 4911), (195, 3274), (390, 1637)]