18605980

素因数分解:

$2^2\times 5^1\times {\mathrm{211}}^1\times {\mathrm{4409}}^1$

素因数の和:4629

約数の個数: 24

約数和(自身を含む): 39266640

約数和(自身を除く): 20660660

約数列:

[1, 2, 4, 5, 10, 20, 211, 422, 844, 1055, 2110, 4220, 4409, 8818, 17636, 22045, 44090, 88180, 930299, 1860598, 3721196, 4651495, 9302990, 18605980]

約数ペア:

[(1, 18605980), (2, 9302990), (4, 4651495), (5, 3721196), (10, 1860598), (20, 930299), (211, 88180), (422, 44090), (844, 22045), (1055, 17636), (2110, 8818), (4220, 4409)]