18638540

素因数分解:

$2^2\times 5^1\times {\mathrm{101}}^1\times {\mathrm{9227}}^1$

素因数の和:9337

約数の個数: 24

約数和(自身を含む): 39532752

約数和(自身を除く): 20894212

約数列:

[1, 2, 4, 5, 10, 20, 101, 202, 404, 505, 1010, 2020, 9227, 18454, 36908, 46135, 92270, 184540, 931927, 1863854, 3727708, 4659635, 9319270, 18638540]

約数ペア:

[(1, 18638540), (2, 9319270), (4, 4659635), (5, 3727708), (10, 1863854), (20, 931927), (101, 184540), (202, 92270), (404, 46135), (505, 36908), (1010, 18454), (2020, 9227)]