78810320

素因数分解:

$2^4\times 5^1\times {\mathrm{985129}}^1$

素因数の和:985142

約数の個数: 20

約数和(自身を含む): 183234180

約数和(自身を除く): 104423860

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 985129, 1970258, 3940516, 4925645, 7881032, 9851290, 15762064, 19702580, 39405160, 78810320]

約数ペア:

[(1, 78810320), (2, 39405160), (4, 19702580), (5, 15762064), (8, 9851290), (10, 7881032), (16, 4925645), (20, 3940516), (40, 1970258), (80, 985129)]