21181167

素因数分解:

$3^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{19777}}^1$

素因数の和:19807

約数の個数: 24

約数和(自身を含む): 37024416

約数和(自身を除く): 15843249

約数列:

[1, 3, 7, 9, 17, 21, 51, 63, 119, 153, 357, 1071, 19777, 59331, 138439, 177993, 336209, 415317, 1008627, 1245951, 2353463, 3025881, 7060389, 21181167]

約数ペア:

[(1, 21181167), (3, 7060389), (7, 3025881), (9, 2353463), (17, 1245951), (21, 1008627), (51, 415317), (63, 336209), (119, 177993), (153, 138439), (357, 59331), (1071, 19777)]