81275418

素因数分解:

$2^1\times 3^2\times 7^2\times {\mathrm{43}}^1\times {\mathrm{2143}}^1$

素因数の和:2208

約数の個数: 72

約数和(自身を含む): 209708928

約数和(自身を除く): 128433510

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 43, 49, 63, 86, 98, 126, 129, 147, 258, 294, 301, 387, 441, 602, 774, 882, 903, 1806, 2107, 2143, 2709, 4214, 4286, 5418, 6321, 6429, 12642, 12858, 15001, 18963, 19287, 30002, 37926, 38574, 45003, 90006, 92149, 105007, 135009, 184298, 210014, 270018, 276447, 315021, 552894, 630042, 645043, 829341, 945063, 1290086, 1658682, 1890126, 1935129, 3870258, 4515301, 5805387, 9030602, 11610774, 13545903, 27091806, 40637709, 81275418]

約数ペア:

[(1, 81275418), (2, 40637709), (3, 27091806), (6, 13545903), (7, 11610774), (9, 9030602), (14, 5805387), (18, 4515301), (21, 3870258), (42, 1935129), (43, 1890126), (49, 1658682), (63, 1290086), (86, 945063), (98, 829341), (126, 645043), (129, 630042), (147, 552894), (258, 315021), (294, 276447), (301, 270018), (387, 210014), (441, 184298), (602, 135009), (774, 105007), (882, 92149), (903, 90006), (1806, 45003), (2107, 38574), (2143, 37926), (2709, 30002), (4214, 19287), (4286, 18963), (5418, 15001), (6321, 12858), (6429, 12642)]