215878180

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{1541987}}^1$

素因数の和:1542003

約数の個数: 24

約数和(自身を含む): 518107968

約数和(自身を除く): 302229788

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 1541987, 3083974, 6167948, 7709935, 10793909, 15419870, 21587818, 30839740, 43175636, 53969545, 107939090, 215878180]

約数ペア:

[(1, 215878180), (2, 107939090), (4, 53969545), (5, 43175636), (7, 30839740), (10, 21587818), (14, 15419870), (20, 10793909), (28, 7709935), (35, 6167948), (70, 3083974), (140, 1541987)]