81171680

素因数分解:

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

素因数の和:5139

約数の個数: 48

約数和(自身を含む): 193705344

約数和(自身を除く): 112533664

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 101, 160, 202, 404, 505, 808, 1010, 1616, 2020, 3232, 4040, 5023, 8080, 10046, 16160, 20092, 25115, 40184, 50230, 80368, 100460, 160736, 200920, 401840, 507323, 803680, 1014646, 2029292, 2536615, 4058584, 5073230, 8117168, 10146460, 16234336, 20292920, 40585840, 81171680]

約数ペア:

[(1, 81171680), (2, 40585840), (4, 20292920), (5, 16234336), (8, 10146460), (10, 8117168), (16, 5073230), (20, 4058584), (32, 2536615), (40, 2029292), (80, 1014646), (101, 803680), (160, 507323), (202, 401840), (404, 200920), (505, 160736), (808, 100460), (1010, 80368), (1616, 50230), (2020, 40184), (3232, 25115), (4040, 20092), (5023, 16160), (8080, 10046)]