28720458

素因数分解:

$2^1\times 3^2\times {\mathrm{13}}^1\times {\mathrm{139}}^1\times {\mathrm{883}}^1$

素因数の和:1043

約数の個数: 48

約数和(自身を含む): 67572960

約数和(自身を除く): 38852502

約数列:

[1, 2, 3, 6, 9, 13, 18, 26, 39, 78, 117, 139, 234, 278, 417, 834, 883, 1251, 1766, 1807, 2502, 2649, 3614, 5298, 5421, 7947, 10842, 11479, 15894, 16263, 22958, 32526, 34437, 68874, 103311, 122737, 206622, 245474, 368211, 736422, 1104633, 1595581, 2209266, 3191162, 4786743, 9573486, 14360229, 28720458]

約数ペア:

[(1, 28720458), (2, 14360229), (3, 9573486), (6, 4786743), (9, 3191162), (13, 2209266), (18, 1595581), (26, 1104633), (39, 736422), (78, 368211), (117, 245474), (139, 206622), (234, 122737), (278, 103311), (417, 68874), (834, 34437), (883, 32526), (1251, 22958), (1766, 16263), (1807, 15894), (2502, 11479), (2649, 10842), (3614, 7947), (5298, 5421)]