20309585

素因数分解:

$5^1\times {\mathrm{101}}^1\times {\mathrm{131}}^1\times {\mathrm{307}}^1$

素因数の和:544

約数の個数: 16

約数和(自身を含む): 24881472

約数和(自身を除く): 4571887

約数列:

[1, 5, 101, 131, 307, 505, 655, 1535, 13231, 31007, 40217, 66155, 155035, 201085, 4061917, 20309585]

約数ペア:

[(1, 20309585), (5, 4061917), (101, 201085), (131, 155035), (307, 66155), (505, 40217), (655, 31007), (1535, 13231)]