21217662

素因数分解:

$2^1\times 3^2\times {\mathrm{43}}^1\times {\mathrm{79}}^1\times {\mathrm{347}}^1$

素因数の和:477

約数の個数: 48

約数和(自身を含む): 47773440

約数和(自身を除く): 26555778

約数列:

[1, 2, 3, 6, 9, 18, 43, 79, 86, 129, 158, 237, 258, 347, 387, 474, 694, 711, 774, 1041, 1422, 2082, 3123, 3397, 6246, 6794, 10191, 14921, 20382, 27413, 29842, 30573, 44763, 54826, 61146, 82239, 89526, 134289, 164478, 246717, 268578, 493434, 1178759, 2357518, 3536277, 7072554, 10608831, 21217662]

約数ペア:

[(1, 21217662), (2, 10608831), (3, 7072554), (6, 3536277), (9, 2357518), (18, 1178759), (43, 493434), (79, 268578), (86, 246717), (129, 164478), (158, 134289), (237, 89526), (258, 82239), (347, 61146), (387, 54826), (474, 44763), (694, 30573), (711, 29842), (774, 27413), (1041, 20382), (1422, 14921), (2082, 10191), (3123, 6794), (3397, 6246)]