19715860

素因数分解:

$2^2\times 5^1\times {\mathrm{977}}^1\times {\mathrm{1009}}^1$

素因数の和:1995

約数の個数: 24

約数和(自身を含む): 41486760

約数和(自身を除く): 21770900

約数列:

[1, 2, 4, 5, 10, 20, 977, 1009, 1954, 2018, 3908, 4036, 4885, 5045, 9770, 10090, 19540, 20180, 985793, 1971586, 3943172, 4928965, 9857930, 19715860]

約数ペア:

[(1, 19715860), (2, 9857930), (4, 4928965), (5, 3943172), (10, 1971586), (20, 985793), (977, 20180), (1009, 19540), (1954, 10090), (2018, 9770), (3908, 5045), (4036, 4885)]