1989800

素因数分解:

$2^3\times 5^2\times {\mathrm{9949}}^1$

素因数の和:9965

約数の個数: 24

約数和(自身を含む): 4626750

約数和(自身を除く): 2636950

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 200, 9949, 19898, 39796, 49745, 79592, 99490, 198980, 248725, 397960, 497450, 994900, 1989800]

約数ペア:

[(1, 1989800), (2, 994900), (4, 497450), (5, 397960), (8, 248725), (10, 198980), (20, 99490), (25, 79592), (40, 49745), (50, 39796), (100, 19898), (200, 9949)]