18001215

素因数分解:

$3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{23531}}^1$

素因数の和:23559

約数の個数: 24

約数和(自身を含む): 33038928

約数和(自身を除く): 15037713

約数列:

[1, 3, 5, 9, 15, 17, 45, 51, 85, 153, 255, 765, 23531, 70593, 117655, 211779, 352965, 400027, 1058895, 1200081, 2000135, 3600243, 6000405, 18001215]

約数ペア:

[(1, 18001215), (3, 6000405), (5, 3600243), (9, 2000135), (15, 1200081), (17, 1058895), (45, 400027), (51, 352965), (85, 211779), (153, 117655), (255, 70593), (765, 23531)]