18628880

素因数分解:

$2^4\times 5^1\times {\mathrm{232861}}^1$

素因数の和:232874

約数の個数: 20

約数和(自身を含む): 43312332

約数和(自身を除く): 24683452

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 232861, 465722, 931444, 1164305, 1862888, 2328610, 3725776, 4657220, 9314440, 18628880]

約数ペア:

[(1, 18628880), (2, 9314440), (4, 4657220), (5, 3725776), (8, 2328610), (10, 1862888), (16, 1164305), (20, 931444), (40, 465722), (80, 232861)]