129795640

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{249607}}^1$

素因数の和:249631

約数の個数: 32

約数和(自身を含む): 314506080

約数和(自身を除く): 184710440

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 249607, 499214, 998428, 1248035, 1996856, 2496070, 3244891, 4992140, 6489782, 9984280, 12979564, 16224455, 25959128, 32448910, 64897820, 129795640]

約数ペア:

[(1, 129795640), (2, 64897820), (4, 32448910), (5, 25959128), (8, 16224455), (10, 12979564), (13, 9984280), (20, 6489782), (26, 4992140), (40, 3244891), (52, 2496070), (65, 1996856), (104, 1248035), (130, 998428), (260, 499214), (520, 249607)]