21726710

素因数分解:

$2^1\times 5^1\times {\mathrm{71}}^2\times {\mathrm{431}}^1$

素因数の和:580

約数の個数: 24

約数和(自身を含む): 39758688

約数和(自身を除く): 18031978

約数列:

[1, 2, 5, 10, 71, 142, 355, 431, 710, 862, 2155, 4310, 5041, 10082, 25205, 30601, 50410, 61202, 153005, 306010, 2172671, 4345342, 10863355, 21726710]

約数ペア:

[(1, 21726710), (2, 10863355), (5, 4345342), (10, 2172671), (71, 306010), (142, 153005), (355, 61202), (431, 50410), (710, 30601), (862, 25205), (2155, 10082), (4310, 5041)]