21726956

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{263}}^1\times {\mathrm{1087}}^1$

素因数の和:1373

約数の個数: 24

約数和(自身を含む): 40212480

約数和(自身を除く): 18485524

約数列:

[1, 2, 4, 19, 38, 76, 263, 526, 1052, 1087, 2174, 4348, 4997, 9994, 19988, 20653, 41306, 82612, 285881, 571762, 1143524, 5431739, 10863478, 21726956]

約数ペア:

[(1, 21726956), (2, 10863478), (4, 5431739), (19, 1143524), (38, 571762), (76, 285881), (263, 82612), (526, 41306), (1052, 20653), (1087, 19988), (2174, 9994), (4348, 4997)]