20872984

素因数分解:

$2^3\times {\mathrm{11}}^2\times {\mathrm{21563}}^1$

素因数の和:21591

約数の個数: 24

約数和(自身を含む): 43020180

約数和(自身を除く): 22147196

約数列:

[1, 2, 4, 8, 11, 22, 44, 88, 121, 242, 484, 968, 21563, 43126, 86252, 172504, 237193, 474386, 948772, 1897544, 2609123, 5218246, 10436492, 20872984]

約数ペア:

[(1, 20872984), (2, 10436492), (4, 5218246), (8, 2609123), (11, 1897544), (22, 948772), (44, 474386), (88, 237193), (121, 172504), (242, 86252), (484, 43126), (968, 21563)]