642512

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{3089}}^1$

素因数の和:3110

約数の個数: 20

約数和(自身を含む): 1341060

約数和(自身を除く): 698548

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 3089, 6178, 12356, 24712, 40157, 49424, 80314, 160628, 321256, 642512]

約数ペア:

[(1, 642512), (2, 321256), (4, 160628), (8, 80314), (13, 49424), (16, 40157), (26, 24712), (52, 12356), (104, 6178), (208, 3089)]