201880820

素因数分解:

$2^2\times 5^1\times {\mathrm{101}}^1\times {\mathrm{139}}^1\times {\mathrm{719}}^1$

素因数の和:968

約数の個数: 48

約数和(自身を含む): 431827200

約数和(自身を除く): 229946380

約数列:

[1, 2, 4, 5, 10, 20, 101, 139, 202, 278, 404, 505, 556, 695, 719, 1010, 1390, 1438, 2020, 2780, 2876, 3595, 7190, 14039, 14380, 28078, 56156, 70195, 72619, 99941, 140390, 145238, 199882, 280780, 290476, 363095, 399764, 499705, 726190, 999410, 1452380, 1998820, 10094041, 20188082, 40376164, 50470205, 100940410, 201880820]

約数ペア:

[(1, 201880820), (2, 100940410), (4, 50470205), (5, 40376164), (10, 20188082), (20, 10094041), (101, 1998820), (139, 1452380), (202, 999410), (278, 726190), (404, 499705), (505, 399764), (556, 363095), (695, 290476), (719, 280780), (1010, 199882), (1390, 145238), (1438, 140390), (2020, 99941), (2780, 72619), (2876, 70195), (3595, 56156), (7190, 28078), (14039, 14380)]