90128781

素因数分解:

$3^4\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{61}}^1$

素因数の和:156

約数の個数: 80

約数和(自身を含む): 153941040

約数和(自身を除く): 63812259

約数列:

[1, 3, 9, 17, 27, 29, 37, 51, 61, 81, 87, 111, 153, 183, 261, 333, 459, 493, 549, 629, 783, 999, 1037, 1073, 1377, 1479, 1647, 1769, 1887, 2257, 2349, 2997, 3111, 3219, 4437, 4941, 5307, 5661, 6771, 9333, 9657, 13311, 15921, 16983, 18241, 20313, 27999, 28971, 30073, 38369, 39933, 47763, 50949, 54723, 60939, 65453, 83997, 86913, 90219, 115107, 143289, 164169, 182817, 196359, 270657, 345321, 492507, 589077, 811971, 1035963, 1112701, 1477521, 1767231, 2435913, 3107889, 3338103, 5301693, 10014309, 30042927, 90128781]

約数ペア:

[(1, 90128781), (3, 30042927), (9, 10014309), (17, 5301693), (27, 3338103), (29, 3107889), (37, 2435913), (51, 1767231), (61, 1477521), (81, 1112701), (87, 1035963), (111, 811971), (153, 589077), (183, 492507), (261, 345321), (333, 270657), (459, 196359), (493, 182817), (549, 164169), (629, 143289), (783, 115107), (999, 90219), (1037, 86913), (1073, 83997), (1377, 65453), (1479, 60939), (1647, 54723), (1769, 50949), (1887, 47763), (2257, 39933), (2349, 38369), (2997, 30073), (3111, 28971), (3219, 27999), (4437, 20313), (4941, 18241), (5307, 16983), (5661, 15921), (6771, 13311), (9333, 9657)]