2000207920

素因数分解:

$2^4\times 5^1\times {\mathrm{25002599}}^1$

素因数の和:25002612

約数の個数: 20

約数和(自身を含む): 4650483600

約数和(自身を除く): 2650275680

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 25002599, 50005198, 100010396, 125012995, 200020792, 250025990, 400041584, 500051980, 1000103960, 2000207920]

約数ペア:

[(1, 2000207920), (2, 1000103960), (4, 500051980), (5, 400041584), (8, 250025990), (10, 200020792), (16, 125012995), (20, 100010396), (40, 50005198), (80, 25002599)]