18262820

素因数分解:

$2^2\times 5^1\times {\mathrm{101}}^1\times {\mathrm{9041}}^1$

素因数の和:9151

約数の個数: 24

約数和(自身を含む): 38735928

約数和(自身を除く): 20473108

約数列:

[1, 2, 4, 5, 10, 20, 101, 202, 404, 505, 1010, 2020, 9041, 18082, 36164, 45205, 90410, 180820, 913141, 1826282, 3652564, 4565705, 9131410, 18262820]

約数ペア:

[(1, 18262820), (2, 9131410), (4, 4565705), (5, 3652564), (10, 1826282), (20, 913141), (101, 180820), (202, 90410), (404, 45205), (505, 36164), (1010, 18082), (2020, 9041)]