420428765

素因数分解:

$5^1\times {\mathrm{251}}^1\times {\mathrm{521}}^1\times {\mathrm{643}}^1$

素因数の和:1420

約数の個数: 16

約数和(自身を含む): 508286016

約数和(自身を除く): 87857251

約数列:

[1, 5, 251, 521, 643, 1255, 2605, 3215, 130771, 161393, 335003, 653855, 806965, 1675015, 84085753, 420428765]

約数ペア:

[(1, 420428765), (5, 84085753), (251, 1675015), (521, 806965), (643, 653855), (1255, 335003), (2605, 161393), (3215, 130771)]