81900060

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{11}}^2\times {\mathrm{29}}^1\times {\mathrm{389}}^1$

素因数の和:452

約数の個数: 144

約数和(自身を含む): 261424800

約数和(自身を除く): 179524740

約数列:

[1, 2, 3, 4, 5, 6, 10, 11, 12, 15, 20, 22, 29, 30, 33, 44, 55, 58, 60, 66, 87, 110, 116, 121, 132, 145, 165, 174, 220, 242, 290, 319, 330, 348, 363, 389, 435, 484, 580, 605, 638, 660, 726, 778, 870, 957, 1167, 1210, 1276, 1452, 1556, 1595, 1740, 1815, 1914, 1945, 2334, 2420, 3190, 3509, 3630, 3828, 3890, 4279, 4668, 4785, 5835, 6380, 7018, 7260, 7780, 8558, 9570, 10527, 11281, 11670, 12837, 14036, 17116, 17545, 19140, 21054, 21395, 22562, 23340, 25674, 33843, 35090, 42108, 42790, 45124, 47069, 51348, 52635, 56405, 64185, 67686, 70180, 85580, 94138, 105270, 112810, 124091, 128370, 135372, 141207, 169215, 188276, 210540, 225620, 235345, 248182, 256740, 282414, 338430, 372273, 470690, 496364, 564828, 620455, 676860, 706035, 744546, 941380, 1240910, 1365001, 1412070, 1489092, 1861365, 2481820, 2730002, 2824140, 3722730, 4095003, 5460004, 6825005, 7445460, 8190006, 13650010, 16380012, 20475015, 27300020, 40950030, 81900060]

約数ペア:

[(1, 81900060), (2, 40950030), (3, 27300020), (4, 20475015), (5, 16380012), (6, 13650010), (10, 8190006), (11, 7445460), (12, 6825005), (15, 5460004), (20, 4095003), (22, 3722730), (29, 2824140), (30, 2730002), (33, 2481820), (44, 1861365), (55, 1489092), (58, 1412070), (60, 1365001), (66, 1240910), (87, 941380), (110, 744546), (116, 706035), (121, 676860), (132, 620455), (145, 564828), (165, 496364), (174, 470690), (220, 372273), (242, 338430), (290, 282414), (319, 256740), (330, 248182), (348, 235345), (363, 225620), (389, 210540), (435, 188276), (484, 169215), (580, 141207), (605, 135372), (638, 128370), (660, 124091), (726, 112810), (778, 105270), (870, 94138), (957, 85580), (1167, 70180), (1210, 67686), (1276, 64185), (1452, 56405), (1556, 52635), (1595, 51348), (1740, 47069), (1815, 45124), (1914, 42790), (1945, 42108), (2334, 35090), (2420, 33843), (3190, 25674), (3509, 23340), (3630, 22562), (3828, 21395), (3890, 21054), (4279, 19140), (4668, 17545), (4785, 17116), (5835, 14036), (6380, 12837), (7018, 11670), (7260, 11281), (7780, 10527), (8558, 9570)]