80319980

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{308923}}^1$

素因数の和:308945

約数の個数: 24

約数和(自身を含む): 181647312

約数和(自身を除く): 101327332

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 308923, 617846, 1235692, 1544615, 3089230, 4015999, 6178460, 8031998, 16063996, 20079995, 40159990, 80319980]

約数ペア:

[(1, 80319980), (2, 40159990), (4, 20079995), (5, 16063996), (10, 8031998), (13, 6178460), (20, 4015999), (26, 3089230), (52, 1544615), (65, 1235692), (130, 617846), (260, 308923)]