21132902

素因数分解:

$2^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{1499}}^1$

素因数の和:1580

約数の個数: 32

約数和(自身を含む): 38880000

約数和(自身を除く): 17747098

約数列:

[1, 2, 7, 14, 19, 38, 53, 106, 133, 266, 371, 742, 1007, 1499, 2014, 2998, 7049, 10493, 14098, 20986, 28481, 56962, 79447, 158894, 199367, 398734, 556129, 1112258, 1509493, 3018986, 10566451, 21132902]

約数ペア:

[(1, 21132902), (2, 10566451), (7, 3018986), (14, 1509493), (19, 1112258), (38, 556129), (53, 398734), (106, 199367), (133, 158894), (266, 79447), (371, 56962), (742, 28481), (1007, 20986), (1499, 14098), (2014, 10493), (2998, 7049)]