18463825

素因数分解:

$5^2\times {\mathrm{23}}^1\times {\mathrm{163}}^1\times {\mathrm{197}}^1$

素因数の和:393

約数の個数: 24

約数和(自身を含む): 24159168

約数和(自身を除く): 5695343

約数列:

[1, 5, 23, 25, 115, 163, 197, 575, 815, 985, 3749, 4075, 4531, 4925, 18745, 22655, 32111, 93725, 113275, 160555, 738553, 802775, 3692765, 18463825]

約数ペア:

[(1, 18463825), (5, 3692765), (23, 802775), (25, 738553), (115, 160555), (163, 113275), (197, 93725), (575, 32111), (815, 22655), (985, 18745), (3749, 4925), (4075, 4531)]