19211980

素因数分解:

$2^2\times 5^1\times {\mathrm{269}}^1\times {\mathrm{3571}}^1$

素因数の和:3849

約数の個数: 24

約数和(自身を含む): 40506480

約数和(自身を除く): 21294500

約数列:

[1, 2, 4, 5, 10, 20, 269, 538, 1076, 1345, 2690, 3571, 5380, 7142, 14284, 17855, 35710, 71420, 960599, 1921198, 3842396, 4802995, 9605990, 19211980]

約数ペア:

[(1, 19211980), (2, 9605990), (4, 4802995), (5, 3842396), (10, 1921198), (20, 960599), (269, 71420), (538, 35710), (1076, 17855), (1345, 14284), (2690, 7142), (3571, 5380)]