40139920

素因数分解:

$2^4\times 5^1\times {\mathrm{251}}^1\times {\mathrm{1999}}^1$

素因数の和:2263

約数の個数: 40

約数和(自身を含む): 93744000

約数和(自身を除く): 53604080

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 251, 502, 1004, 1255, 1999, 2008, 2510, 3998, 4016, 5020, 7996, 9995, 10040, 15992, 19990, 20080, 31984, 39980, 79960, 159920, 501749, 1003498, 2006996, 2508745, 4013992, 5017490, 8027984, 10034980, 20069960, 40139920]

約数ペア:

[(1, 40139920), (2, 20069960), (4, 10034980), (5, 8027984), (8, 5017490), (10, 4013992), (16, 2508745), (20, 2006996), (40, 1003498), (80, 501749), (251, 159920), (502, 79960), (1004, 39980), (1255, 31984), (1999, 20080), (2008, 19990), (2510, 15992), (3998, 10040), (4016, 9995), (5020, 7996)]