13638740

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{15859}}^1$

素因数の和:15911

約数の個数: 24

約数和(自身を含む): 29309280

約数和(自身を除く): 15670540

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 430, 860, 15859, 31718, 63436, 79295, 158590, 317180, 681937, 1363874, 2727748, 3409685, 6819370, 13638740]

約数ペア:

[(1, 13638740), (2, 6819370), (4, 3409685), (5, 2727748), (10, 1363874), (20, 681937), (43, 317180), (86, 158590), (172, 79295), (215, 63436), (430, 31718), (860, 15859)]