18500090

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{127}}^1\times {\mathrm{2081}}^1$

素因数の和:2222

約数の個数: 32

約数和(自身を含む): 38375424

約数和(自身を除く): 19875334

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 127, 254, 635, 889, 1270, 1778, 2081, 4162, 4445, 8890, 10405, 14567, 20810, 29134, 72835, 145670, 264287, 528574, 1321435, 1850009, 2642870, 3700018, 9250045, 18500090]

約数ペア:

[(1, 18500090), (2, 9250045), (5, 3700018), (7, 2642870), (10, 1850009), (14, 1321435), (35, 528574), (70, 264287), (127, 145670), (254, 72835), (635, 29134), (889, 20810), (1270, 14567), (1778, 10405), (2081, 8890), (4162, 4445)]