20915741

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{61}}^2\times {\mathrm{73}}^1$

素因数の和:213

約数の個数: 24

約数和(自身を含む): 26874432

約数和(自身を除く): 5958691

約数列:

[1, 7, 11, 61, 73, 77, 427, 511, 671, 803, 3721, 4453, 4697, 5621, 26047, 31171, 40931, 48983, 271633, 286517, 342881, 1901431, 2987963, 20915741]

約数ペア:

[(1, 20915741), (7, 2987963), (11, 1901431), (61, 342881), (73, 286517), (77, 271633), (427, 48983), (511, 40931), (671, 31171), (803, 26047), (3721, 5621), (4453, 4697)]