81657212

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{11807}}^1$

素因数の和:11850

約数の個数: 48

約数和(自身を含む): 185149440

約数和(自身を除く): 103492228

約数列:

[1, 2, 4, 7, 13, 14, 19, 26, 28, 38, 52, 76, 91, 133, 182, 247, 266, 364, 494, 532, 988, 1729, 3458, 6916, 11807, 23614, 47228, 82649, 153491, 165298, 224333, 306982, 330596, 448666, 613964, 897332, 1074437, 1570331, 2148874, 2916329, 3140662, 4297748, 5832658, 6281324, 11665316, 20414303, 40828606, 81657212]

約数ペア:

[(1, 81657212), (2, 40828606), (4, 20414303), (7, 11665316), (13, 6281324), (14, 5832658), (19, 4297748), (26, 3140662), (28, 2916329), (38, 2148874), (52, 1570331), (76, 1074437), (91, 897332), (133, 613964), (182, 448666), (247, 330596), (266, 306982), (364, 224333), (494, 165298), (532, 153491), (988, 82649), (1729, 47228), (3458, 23614), (6916, 11807)]