20421160

素因数分解:

$2^3\times 5^1\times {\mathrm{510529}}^1$

素因数の和:510540

約数の個数: 16

約数和(自身を含む): 45947700

約数和(自身を除く): 25526540

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 510529, 1021058, 2042116, 2552645, 4084232, 5105290, 10210580, 20421160]

約数ペア:

[(1, 20421160), (2, 10210580), (4, 5105290), (5, 4084232), (8, 2552645), (10, 2042116), (20, 1021058), (40, 510529)]