20325220

素因数分解:

$2^2\times 5^1\times {\mathrm{157}}^1\times {\mathrm{6473}}^1$

素因数の和:6639

約数の個数: 24

約数和(自身を含む): 42961464

約数和(自身を除く): 22636244

約数列:

[1, 2, 4, 5, 10, 20, 157, 314, 628, 785, 1570, 3140, 6473, 12946, 25892, 32365, 64730, 129460, 1016261, 2032522, 4065044, 5081305, 10162610, 20325220]

約数ペア:

[(1, 20325220), (2, 10162610), (4, 5081305), (5, 4065044), (10, 2032522), (20, 1016261), (157, 129460), (314, 64730), (628, 32365), (785, 25892), (1570, 12946), (3140, 6473)]