78512020

素因数分解:

$2^2\times 5^1\times {\mathrm{1721}}^1\times {\mathrm{2281}}^1$

素因数の和:4011

約数の個数: 24

約数和(自身を含む): 165043368

約数和(自身を除く): 86531348

約数列:

[1, 2, 4, 5, 10, 20, 1721, 2281, 3442, 4562, 6884, 8605, 9124, 11405, 17210, 22810, 34420, 45620, 3925601, 7851202, 15702404, 19628005, 39256010, 78512020]

約数ペア:

[(1, 78512020), (2, 39256010), (4, 19628005), (5, 15702404), (10, 7851202), (20, 3925601), (1721, 45620), (2281, 34420), (3442, 22810), (4562, 17210), (6884, 11405), (8605, 9124)]