20217260

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{144409}}^1$

素因数の和:144425

約数の個数: 24

約数和(自身を含む): 48521760

約数和(自身を除く): 28304500

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 144409, 288818, 577636, 722045, 1010863, 1444090, 2021726, 2888180, 4043452, 5054315, 10108630, 20217260]

約数ペア:

[(1, 20217260), (2, 10108630), (4, 5054315), (5, 4043452), (7, 2888180), (10, 2021726), (14, 1444090), (20, 1010863), (28, 722045), (35, 577636), (70, 288818), (140, 144409)]