21507081

素因数分解:

$3^1\times {\mathrm{151}}^1\times {\mathrm{197}}^1\times {\mathrm{241}}^1$

素因数の和:592

約数の個数: 16

約数和(自身を含む): 29132928

約数和(自身を除く): 7625847

約数列:

[1, 3, 151, 197, 241, 453, 591, 723, 29747, 36391, 47477, 89241, 109173, 142431, 7169027, 21507081]

約数ペア:

[(1, 21507081), (3, 7169027), (151, 142431), (197, 109173), (241, 89241), (453, 47477), (591, 36391), (723, 29747)]