28403080

素因数分解:

$2^3\times 5^1\times {\mathrm{499}}^1\times {\mathrm{1423}}^1$

素因数の和:1933

約数の個数: 32

約数和(自身を含む): 64080000

約数和(自身を除く): 35676920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 499, 998, 1423, 1996, 2495, 2846, 3992, 4990, 5692, 7115, 9980, 11384, 14230, 19960, 28460, 56920, 710077, 1420154, 2840308, 3550385, 5680616, 7100770, 14201540, 28403080]

約数ペア:

[(1, 28403080), (2, 14201540), (4, 7100770), (5, 5680616), (8, 3550385), (10, 2840308), (20, 1420154), (40, 710077), (499, 56920), (998, 28460), (1423, 19960), (1996, 14230), (2495, 11384), (2846, 9980), (3992, 7115), (4990, 5692)]