19481380

素因数分解:

$2^2\times 5^1\times {\mathrm{977}}^1\times {\mathrm{997}}^1$

素因数の和:1983

約数の個数: 24

約数和(自身を含む): 40993848

約数和(自身を除く): 21512468

約数列:

[1, 2, 4, 5, 10, 20, 977, 997, 1954, 1994, 3908, 3988, 4885, 4985, 9770, 9970, 19540, 19940, 974069, 1948138, 3896276, 4870345, 9740690, 19481380]

約数ペア:

[(1, 19481380), (2, 9740690), (4, 4870345), (5, 3896276), (10, 1948138), (20, 974069), (977, 19940), (997, 19540), (1954, 9970), (1994, 9770), (3908, 4985), (3988, 4885)]