21180621

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{91691}}^1$

素因数の和:91712

約数の個数: 16

約数和(自身を含む): 35209728

約数和(自身を除く): 14029107

約数列:

[1, 3, 7, 11, 21, 33, 77, 231, 91691, 275073, 641837, 1008601, 1925511, 3025803, 7060207, 21180621]

約数ペア:

[(1, 21180621), (3, 7060207), (7, 3025803), (11, 1925511), (21, 1008601), (33, 641837), (77, 275073), (231, 91691)]