21538699

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{6397}}^1$

素因数の和:6454

約数の個数: 16

約数和(自身を含む): 27229888

約数和(自身を除く): 5691189

約数列:

[1, 7, 13, 37, 91, 259, 481, 3367, 6397, 44779, 83161, 236689, 582127, 1656823, 3076957, 21538699]

約数ペア:

[(1, 21538699), (7, 3076957), (13, 1656823), (37, 582127), (91, 236689), (259, 83161), (481, 44779), (3367, 6397)]