19499876

素因数分解:

$2^2\times {\mathrm{11}}^2\times {\mathrm{40289}}^1$

素因数の和:40315

約数の個数: 18

約数和(自身を含む): 37509990

約数和(自身を除く): 18010114

約数列:

[1, 2, 4, 11, 22, 44, 121, 242, 484, 40289, 80578, 161156, 443179, 886358, 1772716, 4874969, 9749938, 19499876]

約数ペア:

[(1, 19499876), (2, 9749938), (4, 4874969), (11, 1772716), (22, 886358), (44, 443179), (121, 161156), (242, 80578), (484, 40289)]