20973980

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{33829}}^1$

素因数の和:33869

約数の個数: 24

約数和(自身を含む): 45467520

約数和(自身を除く): 24493540

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 33829, 67658, 135316, 169145, 338290, 676580, 1048699, 2097398, 4194796, 5243495, 10486990, 20973980]

約数ペア:

[(1, 20973980), (2, 10486990), (4, 5243495), (5, 4194796), (10, 2097398), (20, 1048699), (31, 676580), (62, 338290), (124, 169145), (155, 135316), (310, 67658), (620, 33829)]