8129420

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31267}}^1$

素因数の和:31289

約数の個数: 24

約数和(自身を含む): 18385584

約数和(自身を除く): 10256164

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 31267, 62534, 125068, 156335, 312670, 406471, 625340, 812942, 1625884, 2032355, 4064710, 8129420]

約数ペア:

[(1, 8129420), (2, 4064710), (4, 2032355), (5, 1625884), (10, 812942), (13, 625340), (20, 406471), (26, 312670), (52, 156335), (65, 125068), (130, 62534), (260, 31267)]