21272815

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{113}}^1\times {\mathrm{1637}}^1$

素因数の和:1778

約数の個数: 16

約数和(自身を含む): 26889408

約数和(自身を除く): 5616593

約数列:

[1, 5, 23, 113, 115, 565, 1637, 2599, 8185, 12995, 37651, 184981, 188255, 924905, 4254563, 21272815]

約数ペア:

[(1, 21272815), (5, 4254563), (23, 924905), (113, 188255), (115, 184981), (565, 37651), (1637, 12995), (2599, 8185)]