72489820

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{278807}}^1$

素因数の和:278829

約数の個数: 24

約数和(自身を含む): 163939104

約数和(自身を除く): 91449284

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 278807, 557614, 1115228, 1394035, 2788070, 3624491, 5576140, 7248982, 14497964, 18122455, 36244910, 72489820]

約数ペア:

[(1, 72489820), (2, 36244910), (4, 18122455), (5, 14497964), (10, 7248982), (13, 5576140), (20, 3624491), (26, 2788070), (52, 1394035), (65, 1115228), (130, 557614), (260, 278807)]