18974180

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{22063}}^1$

素因数の和:22115

約数の個数: 24

約数和(自身を含む): 40774272

約数和(自身を除く): 21800092

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 430, 860, 22063, 44126, 88252, 110315, 220630, 441260, 948709, 1897418, 3794836, 4743545, 9487090, 18974180]

約数ペア:

[(1, 18974180), (2, 9487090), (4, 4743545), (5, 3794836), (10, 1897418), (20, 948709), (43, 441260), (86, 220630), (172, 110315), (215, 88252), (430, 44126), (860, 22063)]