81287856

素因数分解:

$2^4\times 3^2\times {\mathrm{13}}^1\times {\mathrm{173}}^1\times {\mathrm{251}}^1$

素因数の和:451

約数の個数: 120

約数和(自身を含む): 247390416

約数和(自身を除く): 166102560

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 13, 16, 18, 24, 26, 36, 39, 48, 52, 72, 78, 104, 117, 144, 156, 173, 208, 234, 251, 312, 346, 468, 502, 519, 624, 692, 753, 936, 1004, 1038, 1384, 1506, 1557, 1872, 2008, 2076, 2249, 2259, 2768, 3012, 3114, 3263, 4016, 4152, 4498, 4518, 6024, 6228, 6526, 6747, 8304, 8996, 9036, 9789, 12048, 12456, 13052, 13494, 17992, 18072, 19578, 20241, 24912, 26104, 26988, 29367, 35984, 36144, 39156, 40482, 43423, 52208, 53976, 58734, 78312, 80964, 86846, 107952, 117468, 130269, 156624, 161928, 173692, 234936, 260538, 323856, 347384, 390807, 469872, 521076, 564499, 694768, 781614, 1042152, 1128998, 1563228, 1693497, 2084304, 2257996, 3126456, 3386994, 4515992, 5080491, 6252912, 6773988, 9031984, 10160982, 13547976, 20321964, 27095952, 40643928, 81287856]

約数ペア:

[(1, 81287856), (2, 40643928), (3, 27095952), (4, 20321964), (6, 13547976), (8, 10160982), (9, 9031984), (12, 6773988), (13, 6252912), (16, 5080491), (18, 4515992), (24, 3386994), (26, 3126456), (36, 2257996), (39, 2084304), (48, 1693497), (52, 1563228), (72, 1128998), (78, 1042152), (104, 781614), (117, 694768), (144, 564499), (156, 521076), (173, 469872), (208, 390807), (234, 347384), (251, 323856), (312, 260538), (346, 234936), (468, 173692), (502, 161928), (519, 156624), (624, 130269), (692, 117468), (753, 107952), (936, 86846), (1004, 80964), (1038, 78312), (1384, 58734), (1506, 53976), (1557, 52208), (1872, 43423), (2008, 40482), (2076, 39156), (2249, 36144), (2259, 35984), (2768, 29367), (3012, 26988), (3114, 26104), (3263, 24912), (4016, 20241), (4152, 19578), (4498, 18072), (4518, 17992), (6024, 13494), (6228, 13052), (6526, 12456), (6747, 12048), (8304, 9789), (8996, 9036)]