21931469

素因数分解:

$7^2\times {\mathrm{47}}^1\times {\mathrm{89}}^1\times {\mathrm{107}}^1$

素因数の和:257

約数の個数: 24

約数和(自身を含む): 26593920

約数和(自身を除く): 4662451

約数列:

[1, 7, 47, 49, 89, 107, 329, 623, 749, 2303, 4183, 4361, 5029, 5243, 9523, 29281, 35203, 66661, 204967, 246421, 447581, 466627, 3133067, 21931469]

約数ペア:

[(1, 21931469), (7, 3133067), (47, 466627), (49, 447581), (89, 246421), (107, 204967), (329, 66661), (623, 35203), (749, 29281), (2303, 9523), (4183, 5243), (4361, 5029)]