18886556

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{263}}^1\times {\mathrm{1381}}^1$

素因数の和:1661

約数の個数: 24

約数和(自身を含む): 35755104

約数和(自身を除く): 16868548

約数列:

[1, 2, 4, 13, 26, 52, 263, 526, 1052, 1381, 2762, 3419, 5524, 6838, 13676, 17953, 35906, 71812, 363203, 726406, 1452812, 4721639, 9443278, 18886556]

約数ペア:

[(1, 18886556), (2, 9443278), (4, 4721639), (13, 1452812), (26, 726406), (52, 363203), (263, 71812), (526, 35906), (1052, 17953), (1381, 13676), (2762, 6838), (3419, 5524)]