21102977

素因数分解:

$7^2\times {\mathrm{19}}^2\times {\mathrm{1193}}^1$

素因数の和:1245

約数の個数: 18

約数和(自身を含む): 25930098

約数和(自身を除く): 4827121

約数列:

[1, 7, 19, 49, 133, 361, 931, 1193, 2527, 8351, 17689, 22667, 58457, 158669, 430673, 1110683, 3014711, 21102977]

約数ペア:

[(1, 21102977), (7, 3014711), (19, 1110683), (49, 430673), (133, 158669), (361, 58457), (931, 22667), (1193, 17689), (2527, 8351)]