20405126

素因数分解:

$2^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{1871}}^1$

素因数の和:1940

約数の個数: 32

約数和(自身を含む): 37739520

約数和(自身を除く): 17334394

約数列:

[1, 2, 7, 14, 19, 38, 41, 82, 133, 266, 287, 574, 779, 1558, 1871, 3742, 5453, 10906, 13097, 26194, 35549, 71098, 76711, 153422, 248843, 497686, 536977, 1073954, 1457509, 2915018, 10202563, 20405126]

約数ペア:

[(1, 20405126), (2, 10202563), (7, 2915018), (14, 1457509), (19, 1073954), (38, 536977), (41, 497686), (82, 248843), (133, 153422), (266, 76711), (287, 71098), (574, 35549), (779, 26194), (1558, 13097), (1871, 10906), (3742, 5453)]