20578481

素因数分解:

$7^2\times {\mathrm{11}}^1\times {\mathrm{73}}^1\times {\mathrm{523}}^1$

素因数の和:621

約数の個数: 24

約数和(自身を含む): 26522784

約数和(自身を除く): 5944303

約数列:

[1, 7, 11, 49, 73, 77, 511, 523, 539, 803, 3577, 3661, 5621, 5753, 25627, 38179, 39347, 40271, 267253, 281897, 419969, 1870771, 2939783, 20578481]

約数ペア:

[(1, 20578481), (7, 2939783), (11, 1870771), (49, 419969), (73, 281897), (77, 267253), (511, 40271), (523, 39347), (539, 38179), (803, 25627), (3577, 5753), (3661, 5621)]