21131631

素因数分解:

$3^3\times {\mathrm{79}}^1\times {\mathrm{9907}}^1$

素因数の和:9995

約数の個数: 16

約数和(自身を含む): 31705600

約数和(自身を除く): 10573969

約数列:

[1, 3, 9, 27, 79, 237, 711, 2133, 9907, 29721, 89163, 267489, 782653, 2347959, 7043877, 21131631]

約数ペア:

[(1, 21131631), (3, 7043877), (9, 2347959), (27, 782653), (79, 267489), (237, 89163), (711, 29721), (2133, 9907)]