861585

素因数分解:

$3^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{809}}^1$

素因数の和:888

約数の個数: 16

約数和(自身を含む): 1399680

約数和(自身を除く): 538095

約数列:

[1, 3, 5, 15, 71, 213, 355, 809, 1065, 2427, 4045, 12135, 57439, 172317, 287195, 861585]

約数ペア:

[(1, 861585), (3, 287195), (5, 172317), (15, 57439), (71, 12135), (213, 4045), (355, 2427), (809, 1065)]