28382990

素因数分解:

$2^1\times 5^1\times {\mathrm{89}}^1\times {\mathrm{31891}}^1$

素因数の和:31987

約数の個数: 16

約数和(自身を含む): 51665040

約数和(自身を除く): 23282050

約数列:

[1, 2, 5, 10, 89, 178, 445, 890, 31891, 63782, 159455, 318910, 2838299, 5676598, 14191495, 28382990]

約数ペア:

[(1, 28382990), (2, 14191495), (5, 5676598), (10, 2838299), (89, 318910), (178, 159455), (445, 63782), (890, 31891)]