78168020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{558343}}^1$

素因数の和:558359

約数の個数: 24

約数和(自身を含む): 187603584

約数和(自身を除く): 109435564

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 558343, 1116686, 2233372, 2791715, 3908401, 5583430, 7816802, 11166860, 15633604, 19542005, 39084010, 78168020]

約数ペア:

[(1, 78168020), (2, 39084010), (4, 19542005), (5, 15633604), (7, 11166860), (10, 7816802), (14, 5583430), (20, 3908401), (28, 2791715), (35, 2233372), (70, 1116686), (140, 558343)]