90148990

素因数分解:

$2^1\times 5^1\times {\mathrm{89}}^1\times {\mathrm{199}}^1\times {\mathrm{509}}^1$

素因数の和:804

約数の個数: 32

約数和(自身を含む): 165240000

約数和(自身を除く): 75091010

約数列:

[1, 2, 5, 10, 89, 178, 199, 398, 445, 509, 890, 995, 1018, 1990, 2545, 5090, 17711, 35422, 45301, 88555, 90602, 101291, 177110, 202582, 226505, 453010, 506455, 1012910, 9014899, 18029798, 45074495, 90148990]

約数ペア:

[(1, 90148990), (2, 45074495), (5, 18029798), (10, 9014899), (89, 1012910), (178, 506455), (199, 453010), (398, 226505), (445, 202582), (509, 177110), (890, 101291), (995, 90602), (1018, 88555), (1990, 45301), (2545, 35422), (5090, 17711)]