172969420

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{665267}}^1$

素因数の和:665289

約数の個数: 24

約数和(自身を含む): 391177584

約数和(自身を除く): 218208164

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 665267, 1330534, 2661068, 3326335, 6652670, 8648471, 13305340, 17296942, 34593884, 43242355, 86484710, 172969420]

約数ペア:

[(1, 172969420), (2, 86484710), (4, 43242355), (5, 34593884), (10, 17296942), (13, 13305340), (20, 8648471), (26, 6652670), (52, 3326335), (65, 2661068), (130, 1330534), (260, 665267)]