21710960

素因数分解:

$2^4\times 5^1\times {\mathrm{101}}^1\times {\mathrm{2687}}^1$

素因数の和:2801

約数の個数: 40

約数和(自身を含む): 50996736

約数和(自身を除く): 29285776

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 101, 202, 404, 505, 808, 1010, 1616, 2020, 2687, 4040, 5374, 8080, 10748, 13435, 21496, 26870, 42992, 53740, 107480, 214960, 271387, 542774, 1085548, 1356935, 2171096, 2713870, 4342192, 5427740, 10855480, 21710960]

約数ペア:

[(1, 21710960), (2, 10855480), (4, 5427740), (5, 4342192), (8, 2713870), (10, 2171096), (16, 1356935), (20, 1085548), (40, 542774), (80, 271387), (101, 214960), (202, 107480), (404, 53740), (505, 42992), (808, 26870), (1010, 21496), (1616, 13435), (2020, 10748), (2687, 8080), (4040, 5374)]