18478960

素因数分解:

$2^4\times 5^1\times {\mathrm{101}}^1\times {\mathrm{2287}}^1$

素因数の和:2401

約数の個数: 40

約数和(自身を含む): 43407936

約数和(自身を除く): 24928976

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 101, 202, 404, 505, 808, 1010, 1616, 2020, 2287, 4040, 4574, 8080, 9148, 11435, 18296, 22870, 36592, 45740, 91480, 182960, 230987, 461974, 923948, 1154935, 1847896, 2309870, 3695792, 4619740, 9239480, 18478960]

約数ペア:

[(1, 18478960), (2, 9239480), (4, 4619740), (5, 3695792), (8, 2309870), (10, 1847896), (16, 1154935), (20, 923948), (40, 461974), (80, 230987), (101, 182960), (202, 91480), (404, 45740), (505, 36592), (808, 22870), (1010, 18296), (1616, 11435), (2020, 9148), (2287, 8080), (4040, 4574)]