21095990

素因数分解:

$2^1\times 5^1\times {\mathrm{199}}^1\times {\mathrm{10601}}^1$

素因数の和:10807

約数の個数: 16

約数和(自身を含む): 38167200

約数和(自身を除く): 17071210

約数列:

[1, 2, 5, 10, 199, 398, 995, 1990, 10601, 21202, 53005, 106010, 2109599, 4219198, 10547995, 21095990]

約数ペア:

[(1, 21095990), (2, 10547995), (5, 4219198), (10, 2109599), (199, 106010), (398, 53005), (995, 21202), (1990, 10601)]