20285217

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{313}}^1\times {\mathrm{379}}^1$

素因数の和:717

約数の個数: 24

約数和(自身を含む): 31023200

約数和(自身を除く): 10737983

約数列:

[1, 3, 9, 19, 57, 171, 313, 379, 939, 1137, 2817, 3411, 5947, 7201, 17841, 21603, 53523, 64809, 118627, 355881, 1067643, 2253913, 6761739, 20285217]

約数ペア:

[(1, 20285217), (3, 6761739), (9, 2253913), (19, 1067643), (57, 355881), (171, 118627), (313, 64809), (379, 53523), (939, 21603), (1137, 17841), (2817, 7201), (3411, 5947)]