18858455

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{61}}^1\times {\mathrm{73}}^1$

素因数の和:168

約数の個数: 48

約数和(自身を含む): 29289792

約数和(自身を除く): 10431337

約数列:

[1, 5, 7, 11, 35, 55, 61, 73, 77, 121, 305, 365, 385, 427, 511, 605, 671, 803, 847, 2135, 2555, 3355, 4015, 4235, 4453, 4697, 5621, 7381, 8833, 22265, 23485, 28105, 31171, 36905, 44165, 48983, 51667, 61831, 155855, 244915, 258335, 309155, 342881, 538813, 1714405, 2694065, 3771691, 18858455]

約数ペア:

[(1, 18858455), (5, 3771691), (7, 2694065), (11, 1714405), (35, 538813), (55, 342881), (61, 309155), (73, 258335), (77, 244915), (121, 155855), (305, 61831), (365, 51667), (385, 48983), (427, 44165), (511, 36905), (605, 31171), (671, 28105), (803, 23485), (847, 22265), (2135, 8833), (2555, 7381), (3355, 5621), (4015, 4697), (4235, 4453)]