21520564

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{163}}^1\times {\mathrm{2539}}^1$

素因数の和:2719

約数の個数: 24

約数和(自身を含む): 40822880

約数和(自身を除く): 19302316

約数列:

[1, 2, 4, 13, 26, 52, 163, 326, 652, 2119, 2539, 4238, 5078, 8476, 10156, 33007, 66014, 132028, 413857, 827714, 1655428, 5380141, 10760282, 21520564]

約数ペア:

[(1, 21520564), (2, 10760282), (4, 5380141), (13, 1655428), (26, 827714), (52, 413857), (163, 132028), (326, 66014), (652, 33007), (2119, 10156), (2539, 8476), (4238, 5078)]