20407541

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{5639}}^1$

素因数の和:5704

約数の個数: 16

約数和(自身を含む): 25989120

約数和(自身を除く): 5581579

約数列:

[1, 7, 11, 47, 77, 329, 517, 3619, 5639, 39473, 62029, 265033, 434203, 1855231, 2915363, 20407541]

約数ペア:

[(1, 20407541), (7, 2915363), (11, 1855231), (47, 434203), (77, 265033), (329, 62029), (517, 39473), (3619, 5639)]