2018909090

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{499}}^1\times {\mathrm{36781}}^1$

素因数の和:37298

約数の個数: 32

約数和(自身を含む): 3972456000

約数和(自身を除く): 1953546910

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 499, 998, 2495, 4990, 5489, 10978, 27445, 36781, 54890, 73562, 183905, 367810, 404591, 809182, 2022955, 4045910, 18353719, 36707438, 91768595, 183537190, 201890909, 403781818, 1009454545, 2018909090]

約数ペア:

[(1, 2018909090), (2, 1009454545), (5, 403781818), (10, 201890909), (11, 183537190), (22, 91768595), (55, 36707438), (110, 18353719), (499, 4045910), (998, 2022955), (2495, 809182), (4990, 404591), (5489, 367810), (10978, 183905), (27445, 73562), (36781, 54890)]