20802574490

素因数分解:

$2^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{997}}^1\times {\mathrm{67307}}^1$

素因数の和:68342

約数の個数: 32

約数和(自身を含む): 38691869184

約数和(自身を除く): 17889294694

約数列:

[1, 2, 5, 10, 31, 62, 155, 310, 997, 1994, 4985, 9970, 30907, 61814, 67307, 134614, 154535, 309070, 336535, 673070, 2086517, 4173034, 10432585, 20865170, 67105079, 134210158, 335525395, 671050790, 2080257449, 4160514898, 10401287245, 20802574490]

約数ペア:

[(1, 20802574490), (2, 10401287245), (5, 4160514898), (10, 2080257449), (31, 671050790), (62, 335525395), (155, 134210158), (310, 67105079), (997, 20865170), (1994, 10432585), (4985, 4173034), (9970, 2086517), (30907, 673070), (61814, 336535), (67307, 309070), (134614, 154535)]