4080207920

素因数分解:

$2^4\times 5^1\times {\mathrm{51002599}}^1$

素因数の和:51002612

約数の個数: 20

約数和(自身を含む): 9486483600

約数和(自身を除く): 5406275680

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 51002599, 102005198, 204010396, 255012995, 408020792, 510025990, 816041584, 1020051980, 2040103960, 4080207920]

約数ペア:

[(1, 4080207920), (2, 2040103960), (4, 1020051980), (5, 816041584), (8, 510025990), (10, 408020792), (16, 255012995), (20, 204010396), (40, 102005198), (80, 51002599)]