21695653

素因数分解:

$7^1\times {\mathrm{37}}^1\times {\mathrm{211}}^1\times {\mathrm{397}}^1$

素因数の和:652

約数の個数: 16

約数和(自身を含む): 25650304

約数和(自身を除く): 3954651

約数列:

[1, 7, 37, 211, 259, 397, 1477, 2779, 7807, 14689, 54649, 83767, 102823, 586369, 3099379, 21695653]

約数ペア:

[(1, 21695653), (7, 3099379), (37, 586369), (211, 102823), (259, 83767), (397, 54649), (1477, 14689), (2779, 7807)]