18725540

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{13187}}^1$

素因数の和:13267

約数の個数: 24

約数和(自身を含む): 39880512

約数和(自身を除く): 21154972

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 13187, 26374, 52748, 65935, 131870, 263740, 936277, 1872554, 3745108, 4681385, 9362770, 18725540]

約数ペア:

[(1, 18725540), (2, 9362770), (4, 4681385), (5, 3745108), (10, 1872554), (20, 936277), (71, 263740), (142, 131870), (284, 65935), (355, 52748), (710, 26374), (1420, 13187)]