18611215

素因数分解:

$5^1\times 7^1\times {\mathrm{53}}^1\times {\mathrm{79}}^1\times {\mathrm{127}}^1$

素因数の和:271

約数の個数: 32

約数和(自身を含む): 26542080

約数和(自身を除く): 7930865

約数列:

[1, 5, 7, 35, 53, 79, 127, 265, 371, 395, 553, 635, 889, 1855, 2765, 4187, 4445, 6731, 10033, 20935, 29309, 33655, 47117, 50165, 70231, 146545, 235585, 351155, 531749, 2658745, 3722243, 18611215]

約数ペア:

[(1, 18611215), (5, 3722243), (7, 2658745), (35, 531749), (53, 351155), (79, 235585), (127, 146545), (265, 70231), (371, 50165), (395, 47117), (553, 33655), (635, 29309), (889, 20935), (1855, 10033), (2765, 6731), (4187, 4445)]