18899155

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^2\times {\mathrm{29}}^1\times {\mathrm{41}}^1$

素因数の和:120

約数の個数: 48

約数和(自身を含む): 27851040

約数和(自身を除く): 8951885

約数列:

[1, 5, 11, 17, 29, 41, 55, 85, 145, 187, 205, 289, 319, 451, 493, 697, 935, 1189, 1445, 1595, 2255, 2465, 3179, 3485, 5423, 5945, 7667, 8381, 11849, 13079, 15895, 20213, 27115, 38335, 41905, 59245, 65395, 92191, 101065, 130339, 222343, 343621, 460955, 651695, 1111715, 1718105, 3779831, 18899155]

約数ペア:

[(1, 18899155), (5, 3779831), (11, 1718105), (17, 1111715), (29, 651695), (41, 460955), (55, 343621), (85, 222343), (145, 130339), (187, 101065), (205, 92191), (289, 65395), (319, 59245), (451, 41905), (493, 38335), (697, 27115), (935, 20213), (1189, 15895), (1445, 13079), (1595, 11849), (2255, 8381), (2465, 7667), (3179, 5945), (3485, 5423)]