21215163

素因数分解:

$3^1\times {\mathrm{41}}^1\times {\mathrm{173}}^1\times {\mathrm{997}}^1$

素因数の和:1214

約数の個数: 16

約数和(自身を含む): 29173536

約数和(自身を除く): 7958373

約数列:

[1, 3, 41, 123, 173, 519, 997, 2991, 7093, 21279, 40877, 122631, 172481, 517443, 7071721, 21215163]

約数ペア:

[(1, 21215163), (3, 7071721), (41, 517443), (123, 172481), (173, 122631), (519, 40877), (997, 21279), (2991, 7093)]