978018980

素因数分解:

$2^2\times 5^1\times {\mathrm{48900949}}^1$

素因数の和:48900958

約数の個数: 12

約数和(自身を含む): 2053839900

約数和(自身を除く): 1075820920

約数列:

[1, 2, 4, 5, 10, 20, 48900949, 97801898, 195603796, 244504745, 489009490, 978018980]

約数ペア:

[(1, 978018980), (2, 489009490), (4, 244504745), (5, 195603796), (10, 97801898), (20, 48900949)]