21275961

素因数分解:

$3^1\times 7^1\times {\mathrm{443}}^1\times {\mathrm{2287}}^1$

素因数の和:2740

約数の個数: 16

約数和(自身を含む): 32507904

約数和(自身を除く): 11231943

約数列:

[1, 3, 7, 21, 443, 1329, 2287, 3101, 6861, 9303, 16009, 48027, 1013141, 3039423, 7091987, 21275961]

約数ペア:

[(1, 21275961), (3, 7091987), (7, 3039423), (21, 1013141), (443, 48027), (1329, 16009), (2287, 9303), (3101, 6861)]