21771431

素因数分解:

${\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{139}}^1\times {\mathrm{491}}^1$

素因数の和:670

約数の個数: 16

約数和(自身を含む): 24796800

約数和(自身を除く): 3025369

約数列:

[1, 11, 29, 139, 319, 491, 1529, 4031, 5401, 14239, 44341, 68249, 156629, 750739, 1979221, 21771431]

約数ペア:

[(1, 21771431), (11, 1979221), (29, 750739), (139, 156629), (319, 68249), (491, 44341), (1529, 14239), (4031, 5401)]