21657307

素因数分解:

$7^1\times {\mathrm{41}}^1\times {\mathrm{59}}^1\times {\mathrm{1279}}^1$

素因数の和:1386

約数の個数: 16

約数和(自身を含む): 25804800

約数和(自身を除く): 4147493

約数列:

[1, 7, 41, 59, 287, 413, 1279, 2419, 8953, 16933, 52439, 75461, 367073, 528227, 3093901, 21657307]

約数ペア:

[(1, 21657307), (7, 3093901), (41, 528227), (59, 367073), (287, 75461), (413, 52439), (1279, 16933), (2419, 8953)]