18263690

素因数分解:

$2^1\times 5^1\times {\mathrm{89}}^1\times {\mathrm{20521}}^1$

素因数の和:20617

約数の個数: 16

約数和(自身を含む): 33245640

約数和(自身を除く): 14981950

約数列:

[1, 2, 5, 10, 89, 178, 445, 890, 20521, 41042, 102605, 205210, 1826369, 3652738, 9131845, 18263690]

約数ペア:

[(1, 18263690), (2, 9131845), (5, 3652738), (10, 1826369), (89, 205210), (178, 102605), (445, 41042), (890, 20521)]