21051045

素因数分解:

$3^2\times 5^1\times {\mathrm{131}}^1\times {\mathrm{3571}}^1$

素因数の和:3713

約数の個数: 24

約数和(自身を含む): 36777312

約数和(自身を除く): 15726267

約数列:

[1, 3, 5, 9, 15, 45, 131, 393, 655, 1179, 1965, 3571, 5895, 10713, 17855, 32139, 53565, 160695, 467801, 1403403, 2339005, 4210209, 7017015, 21051045]

約数ペア:

[(1, 21051045), (3, 7017015), (5, 4210209), (9, 2339005), (15, 1403403), (45, 467801), (131, 160695), (393, 53565), (655, 32139), (1179, 17855), (1965, 10713), (3571, 5895)]