8421740

素因数分解:

$2^2\times 5^1\times {\mathrm{431}}^1\times {\mathrm{977}}^1$

素因数の和:1417

約数の個数: 24

約数和(自身を含む): 17744832

約数和(自身を除く): 9323092

約数列:

[1, 2, 4, 5, 10, 20, 431, 862, 977, 1724, 1954, 2155, 3908, 4310, 4885, 8620, 9770, 19540, 421087, 842174, 1684348, 2105435, 4210870, 8421740]

約数ペア:

[(1, 8421740), (2, 4210870), (4, 2105435), (5, 1684348), (10, 842174), (20, 421087), (431, 19540), (862, 9770), (977, 8620), (1724, 4885), (1954, 4310), (2155, 3908)]