1221640

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{4363}}^1$

素因数の和:4381

約数の個数: 32

約数和(自身を含む): 3142080

約数和(自身を除く): 1920440

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 4363, 8726, 17452, 21815, 30541, 34904, 43630, 61082, 87260, 122164, 152705, 174520, 244328, 305410, 610820, 1221640]

約数ペア:

[(1, 1221640), (2, 610820), (4, 305410), (5, 244328), (7, 174520), (8, 152705), (10, 122164), (14, 87260), (20, 61082), (28, 43630), (35, 34904), (40, 30541), (56, 21815), (70, 17452), (140, 8726), (280, 4363)]