21131031

素因数分解:

$3^1\times {\mathrm{41}}^1\times {\mathrm{149}}^1\times {\mathrm{1153}}^1$

素因数の和:1346

約数の個数: 16

約数和(自身を含む): 29080800

約数和(自身を除く): 7949769

約数列:

[1, 3, 41, 123, 149, 447, 1153, 3459, 6109, 18327, 47273, 141819, 171797, 515391, 7043677, 21131031]

約数ペア:

[(1, 21131031), (3, 7043677), (41, 515391), (123, 171797), (149, 141819), (447, 47273), (1153, 18327), (3459, 6109)]