20961080

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{74861}}^1$

素因数の和:74879

約数の個数: 32

約数和(自身を含む): 53900640

約数和(自身を除く): 32939560

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 74861, 149722, 299444, 374305, 524027, 598888, 748610, 1048054, 1497220, 2096108, 2620135, 2994440, 4192216, 5240270, 10480540, 20961080]

約数ペア:

[(1, 20961080), (2, 10480540), (4, 5240270), (5, 4192216), (7, 2994440), (8, 2620135), (10, 2096108), (14, 1497220), (20, 1048054), (28, 748610), (35, 598888), (40, 524027), (56, 374305), (70, 299444), (140, 149722), (280, 74861)]