66921020

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{81611}}^1$

素因数の和:81661

約数の個数: 24

約数和(自身を含む): 143963568

約数和(自身を除く): 77042548

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 81611, 163222, 326444, 408055, 816110, 1632220, 3346051, 6692102, 13384204, 16730255, 33460510, 66921020]

約数ペア:

[(1, 66921020), (2, 33460510), (4, 16730255), (5, 13384204), (10, 6692102), (20, 3346051), (41, 1632220), (82, 816110), (164, 408055), (205, 326444), (410, 163222), (820, 81611)]