21038445

素因数分解:

$3^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{20327}}^1$

素因数の和:20361

約数の個数: 24

約数和(自身を含む): 38054016

約数和(自身を除く): 17015571

約数列:

[1, 3, 5, 9, 15, 23, 45, 69, 115, 207, 345, 1035, 20327, 60981, 101635, 182943, 304905, 467521, 914715, 1402563, 2337605, 4207689, 7012815, 21038445]

約数ペア:

[(1, 21038445), (3, 7012815), (5, 4207689), (9, 2337605), (15, 1402563), (23, 914715), (45, 467521), (69, 304905), (115, 182943), (207, 101635), (345, 60981), (1035, 20327)]