21102109

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{53}}^1\times {\mathrm{2473}}^1$

素因数の和:2556

約数の個数: 16

約数和(自身を含む): 25650432

約数和(自身を除く): 4548323

約数列:

[1, 7, 23, 53, 161, 371, 1219, 2473, 8533, 17311, 56879, 131069, 398153, 917483, 3014587, 21102109]

約数ペア:

[(1, 21102109), (7, 3014587), (23, 917483), (53, 398153), (161, 131069), (371, 56879), (1219, 17311), (2473, 8533)]