81387790

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{19997}}^1$

素因数の和:20052

約数の個数: 32

約数和(自身を含む): 164143584

約数和(自身を除く): 82755794

約数列:

[1, 2, 5, 10, 11, 22, 37, 55, 74, 110, 185, 370, 407, 814, 2035, 4070, 19997, 39994, 99985, 199970, 219967, 439934, 739889, 1099835, 1479778, 2199670, 3699445, 7398890, 8138779, 16277558, 40693895, 81387790]

約数ペア:

[(1, 81387790), (2, 40693895), (5, 16277558), (10, 8138779), (11, 7398890), (22, 3699445), (37, 2199670), (55, 1479778), (74, 1099835), (110, 739889), (185, 439934), (370, 219967), (407, 199970), (814, 99985), (2035, 39994), (4070, 19997)]