81656106

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{139}}^1\times {\mathrm{197}}^1$

素因数の和:419

約数の個数: 64

約数和(自身を含む): 191600640

約数和(自身を除く): 109944534

約数列:

[1, 2, 3, 6, 7, 14, 21, 42, 71, 139, 142, 197, 213, 278, 394, 417, 426, 497, 591, 834, 973, 994, 1182, 1379, 1491, 1946, 2758, 2919, 2982, 4137, 5838, 8274, 9869, 13987, 19738, 27383, 27974, 29607, 41961, 54766, 59214, 69083, 82149, 83922, 97909, 138166, 164298, 191681, 195818, 207249, 293727, 383362, 414498, 575043, 587454, 1150086, 1944193, 3888386, 5832579, 11665158, 13609351, 27218702, 40828053, 81656106]

約数ペア:

[(1, 81656106), (2, 40828053), (3, 27218702), (6, 13609351), (7, 11665158), (14, 5832579), (21, 3888386), (42, 1944193), (71, 1150086), (139, 587454), (142, 575043), (197, 414498), (213, 383362), (278, 293727), (394, 207249), (417, 195818), (426, 191681), (497, 164298), (591, 138166), (834, 97909), (973, 83922), (994, 82149), (1182, 69083), (1379, 59214), (1491, 54766), (1946, 41961), (2758, 29607), (2919, 27974), (2982, 27383), (4137, 19738), (5838, 13987), (8274, 9869)]