78810520

素因数分解:

$2^3\times 5^1\times {\mathrm{1970263}}^1$

素因数の和:1970274

約数の個数: 16

約数和(自身を含む): 177323760

約数和(自身を除く): 98513240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1970263, 3940526, 7881052, 9851315, 15762104, 19702630, 39405260, 78810520]

約数ペア:

[(1, 78810520), (2, 39405260), (4, 19702630), (5, 15762104), (8, 9851315), (10, 7881052), (20, 3940526), (40, 1970263)]