21006561

素因数分解:

$3^1\times {\mathrm{31}}^1\times {\mathrm{107}}^1\times {\mathrm{2111}}^1$

素因数の和:2252

約数の個数: 16

約数和(自身を含む): 29196288

約数和(自身を除く): 8189727

約数列:

[1, 3, 31, 93, 107, 321, 2111, 3317, 6333, 9951, 65441, 196323, 225877, 677631, 7002187, 21006561]

約数ペア:

[(1, 21006561), (3, 7002187), (31, 677631), (93, 225877), (107, 196323), (321, 65441), (2111, 9951), (3317, 6333)]