21041657

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{107}}^1\times {\mathrm{2161}}^1$

素因数の和:2288

約数の個数: 16

約数和(自身を含む): 26151552

約数和(自身を除く): 5109895

約数列:

[1, 7, 13, 91, 107, 749, 1391, 2161, 9737, 15127, 28093, 196651, 231227, 1618589, 3005951, 21041657]

約数ペア:

[(1, 21041657), (7, 3005951), (13, 1618589), (91, 231227), (107, 196651), (749, 28093), (1391, 15127), (2161, 9737)]