20576865

素因数分解:

$3^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{139}}^2$

素因数の和:357

約数の個数: 24

約数和(自身を含む): 33628608

約数和(自身を除く): 13051743

約数列:

[1, 3, 5, 15, 71, 139, 213, 355, 417, 695, 1065, 2085, 9869, 19321, 29607, 49345, 57963, 96605, 148035, 289815, 1371791, 4115373, 6858955, 20576865]

約数ペア:

[(1, 20576865), (3, 6858955), (5, 4115373), (15, 1371791), (71, 289815), (139, 148035), (213, 96605), (355, 57963), (417, 49345), (695, 29607), (1065, 19321), (2085, 9869)]