18978885

素因数分解:

$3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{24809}}^1$

素因数の和:24837

約数の個数: 24

約数和(自身を含む): 34833240

約数和(自身を除く): 15854355

約数列:

[1, 3, 5, 9, 15, 17, 45, 51, 85, 153, 255, 765, 24809, 74427, 124045, 223281, 372135, 421753, 1116405, 1265259, 2108765, 3795777, 6326295, 18978885]

約数ペア:

[(1, 18978885), (3, 6326295), (5, 3795777), (9, 2108765), (15, 1265259), (17, 1116405), (45, 421753), (51, 372135), (85, 223281), (153, 124045), (255, 74427), (765, 24809)]