18208280

素因数分解:

$2^3\times 5^1\times {\mathrm{101}}^1\times {\mathrm{4507}}^1$

素因数の和:4619

約数の個数: 32

約数和(自身を含む): 41383440

約数和(自身を除く): 23175160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 101, 202, 404, 505, 808, 1010, 2020, 4040, 4507, 9014, 18028, 22535, 36056, 45070, 90140, 180280, 455207, 910414, 1820828, 2276035, 3641656, 4552070, 9104140, 18208280]

約数ペア:

[(1, 18208280), (2, 9104140), (4, 4552070), (5, 3641656), (8, 2276035), (10, 1820828), (20, 910414), (40, 455207), (101, 180280), (202, 90140), (404, 45070), (505, 36056), (808, 22535), (1010, 18028), (2020, 9014), (4040, 4507)]