20292920

素因数分解:

$2^3\times 5^1\times {\mathrm{101}}^1\times {\mathrm{5023}}^1$

素因数の和:5135

約数の個数: 32

約数和(自身を含む): 46120320

約数和(自身を除く): 25827400

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 101, 202, 404, 505, 808, 1010, 2020, 4040, 5023, 10046, 20092, 25115, 40184, 50230, 100460, 200920, 507323, 1014646, 2029292, 2536615, 4058584, 5073230, 10146460, 20292920]

約数ペア:

[(1, 20292920), (2, 10146460), (4, 5073230), (5, 4058584), (8, 2536615), (10, 2029292), (20, 1014646), (40, 507323), (101, 200920), (202, 100460), (404, 50230), (505, 40184), (808, 25115), (1010, 20092), (2020, 10046), (4040, 5023)]