21905252

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{288227}}^1$

素因数の和:288250

約数の個数: 12

約数和(自身を含む): 40351920

約数和(自身を除く): 18446668

約数列:

[1, 2, 4, 19, 38, 76, 288227, 576454, 1152908, 5476313, 10952626, 21905252]

約数ペア:

[(1, 21905252), (2, 10952626), (4, 5476313), (19, 1152908), (38, 576454), (76, 288227)]