18261020

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{10259}}^1$

素因数の和:10357

約数の個数: 24

約数和(自身を含む): 38782800

約数和(自身を除く): 20521780

約数列:

[1, 2, 4, 5, 10, 20, 89, 178, 356, 445, 890, 1780, 10259, 20518, 41036, 51295, 102590, 205180, 913051, 1826102, 3652204, 4565255, 9130510, 18261020]

約数ペア:

[(1, 18261020), (2, 9130510), (4, 4565255), (5, 3652204), (10, 1826102), (20, 913051), (89, 205180), (178, 102590), (356, 51295), (445, 41036), (890, 20518), (1780, 10259)]