21508497

素因数分解:

$3^4\times {\mathrm{131}}^1\times {\mathrm{2027}}^1$

素因数の和:2170

約数の個数: 20

約数和(自身を含む): 32391216

約数和(自身を除く): 10882719

約数列:

[1, 3, 9, 27, 81, 131, 393, 1179, 2027, 3537, 6081, 10611, 18243, 54729, 164187, 265537, 796611, 2389833, 7169499, 21508497]

約数ペア:

[(1, 21508497), (3, 7169499), (9, 2389833), (27, 796611), (81, 265537), (131, 164187), (393, 54729), (1179, 18243), (2027, 10611), (3537, 6081)]