20069960

素因数分解:

$2^3\times 5^1\times {\mathrm{251}}^1\times {\mathrm{1999}}^1$

素因数の和:2261

約数の個数: 32

約数和(自身を含む): 45360000

約数和(自身を除く): 25290040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 251, 502, 1004, 1255, 1999, 2008, 2510, 3998, 5020, 7996, 9995, 10040, 15992, 19990, 39980, 79960, 501749, 1003498, 2006996, 2508745, 4013992, 5017490, 10034980, 20069960]

約数ペア:

[(1, 20069960), (2, 10034980), (4, 5017490), (5, 4013992), (8, 2508745), (10, 2006996), (20, 1003498), (40, 501749), (251, 79960), (502, 39980), (1004, 19990), (1255, 15992), (1999, 10040), (2008, 9995), (2510, 7996), (3998, 5020)]