21023881

素因数分解:

${\mathrm{37}}^1\times {\mathrm{53}}^1\times {\mathrm{71}}^1\times {\mathrm{151}}^1$

素因数の和:312

約数の個数: 16

約数和(自身を含む): 22457088

約数和(自身を除く): 1433207

約数列:

[1, 37, 53, 71, 151, 1961, 2627, 3763, 5587, 8003, 10721, 139231, 296111, 396677, 568213, 21023881]

約数ペア:

[(1, 21023881), (37, 568213), (53, 396677), (71, 296111), (151, 139231), (1961, 10721), (2627, 8003), (3763, 5587)]