8478020

素因数分解:

$2^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{3889}}^1$

素因数の和:4007

約数の個数: 24

約数和(自身を含む): 17971800

約数和(自身を除く): 9493780

約数列:

[1, 2, 4, 5, 10, 20, 109, 218, 436, 545, 1090, 2180, 3889, 7778, 15556, 19445, 38890, 77780, 423901, 847802, 1695604, 2119505, 4239010, 8478020]

約数ペア:

[(1, 8478020), (2, 4239010), (4, 2119505), (5, 1695604), (10, 847802), (20, 423901), (109, 77780), (218, 38890), (436, 19445), (545, 15556), (1090, 7778), (2180, 3889)]