81955620

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{455309}}^1$

素因数の和:455324

約数の個数: 36

約数和(自身を含む): 248599260

約数和(自身を除く): 166643640

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 455309, 910618, 1365927, 1821236, 2276545, 2731854, 4097781, 4553090, 5463708, 6829635, 8195562, 9106180, 13659270, 16391124, 20488905, 27318540, 40977810, 81955620]

約数ペア:

[(1, 81955620), (2, 40977810), (3, 27318540), (4, 20488905), (5, 16391124), (6, 13659270), (9, 9106180), (10, 8195562), (12, 6829635), (15, 5463708), (18, 4553090), (20, 4097781), (30, 2731854), (36, 2276545), (45, 1821236), (60, 1365927), (90, 910618), (180, 455309)]