19541540

素因数分解:

$2^2\times 5^1\times {\mathrm{431}}^1\times {\mathrm{2267}}^1$

素因数の和:2707

約数の個数: 24

約数和(自身を含む): 41150592

約数和(自身を除く): 21609052

約数列:

[1, 2, 4, 5, 10, 20, 431, 862, 1724, 2155, 2267, 4310, 4534, 8620, 9068, 11335, 22670, 45340, 977077, 1954154, 3908308, 4885385, 9770770, 19541540]

約数ペア:

[(1, 19541540), (2, 9770770), (4, 4885385), (5, 3908308), (10, 1954154), (20, 977077), (431, 45340), (862, 22670), (1724, 11335), (2155, 9068), (2267, 8620), (4310, 4534)]