81169921

素因数分解:

$7^3\times {\mathrm{23}}^1\times {\mathrm{10289}}^1$

素因数の和:10333

約数の個数: 16

約数和(自身を含む): 98784000

約数和(自身を除く): 17614079

約数列:

[1, 7, 23, 49, 161, 343, 1127, 7889, 10289, 72023, 236647, 504161, 1656529, 3529127, 11595703, 81169921]

約数ペア:

[(1, 81169921), (7, 11595703), (23, 3529127), (49, 1656529), (161, 504161), (343, 236647), (1127, 72023), (7889, 10289)]