21255794

素因数分解:

$2^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{1949}}^1$

素因数の和:2018

約数の個数: 32

約数和(自身を含む): 39312000

約数和(自身を除く): 18056206

約数列:

[1, 2, 7, 14, 19, 38, 41, 82, 133, 266, 287, 574, 779, 1558, 1949, 3898, 5453, 10906, 13643, 27286, 37031, 74062, 79909, 159818, 259217, 518434, 559363, 1118726, 1518271, 3036542, 10627897, 21255794]

約数ペア:

[(1, 21255794), (2, 10627897), (7, 3036542), (14, 1518271), (19, 1118726), (38, 559363), (41, 518434), (82, 259217), (133, 159818), (266, 79909), (287, 74062), (574, 37031), (779, 27286), (1558, 13643), (1949, 10906), (3898, 5453)]