39990140

素因数分解:

$2^2\times 5^1\times {\mathrm{181}}^1\times {\mathrm{11047}}^1$

素因数の和:11237

約数の個数: 24

約数和(自身を含む): 84450912

約数和(自身を除く): 44460772

約数列:

[1, 2, 4, 5, 10, 20, 181, 362, 724, 905, 1810, 3620, 11047, 22094, 44188, 55235, 110470, 220940, 1999507, 3999014, 7998028, 9997535, 19995070, 39990140]

約数ペア:

[(1, 39990140), (2, 19995070), (4, 9997535), (5, 7998028), (10, 3999014), (20, 1999507), (181, 220940), (362, 110470), (724, 55235), (905, 44188), (1810, 22094), (3620, 11047)]