21002180

素因数分解:

$2^2\times 5^1\times {\mathrm{113}}^1\times {\mathrm{9293}}^1$

素因数の和:9415

約数の個数: 24

約数和(自身を含む): 44499672

約数和(自身を除く): 23497492

約数列:

[1, 2, 4, 5, 10, 20, 113, 226, 452, 565, 1130, 2260, 9293, 18586, 37172, 46465, 92930, 185860, 1050109, 2100218, 4200436, 5250545, 10501090, 21002180]

約数ペア:

[(1, 21002180), (2, 10501090), (4, 5250545), (5, 4200436), (10, 2100218), (20, 1050109), (113, 185860), (226, 92930), (452, 46465), (565, 37172), (1130, 18586), (2260, 9293)]