217295585

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{107839}}^1$

素因数の和:107888

約数の個数: 16

約数和(自身を含む): 289873920

約数和(自身を除く): 72578335

約数列:

[1, 5, 13, 31, 65, 155, 403, 2015, 107839, 539195, 1401907, 3343009, 7009535, 16715045, 43459117, 217295585]

約数ペア:

[(1, 217295585), (5, 43459117), (13, 16715045), (31, 7009535), (65, 3343009), (155, 1401907), (403, 539195), (2015, 107839)]