21721199

素因数分解:

${\mathrm{19}}^1\times {\mathrm{67}}^1\times {\mathrm{113}}^1\times {\mathrm{151}}^1$

素因数の和:350

約数の個数: 16

約数和(自身を含む): 23566080

約数和(自身を除く): 1844881

約数列:

[1, 19, 67, 113, 151, 1273, 2147, 2869, 7571, 10117, 17063, 143849, 192223, 324197, 1143221, 21721199]

約数ペア:

[(1, 21721199), (19, 1143221), (67, 324197), (113, 192223), (151, 143849), (1273, 17063), (2147, 10117), (2869, 7571)]