81476080

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{29}}^2\times {\mathrm{173}}^1$

素因数の和:251

約数の個数: 120

約数和(自身を含む): 225512352

約数和(自身を除く): 144036272

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 29, 35, 40, 56, 58, 70, 80, 112, 116, 140, 145, 173, 203, 232, 280, 290, 346, 406, 464, 560, 580, 692, 812, 841, 865, 1015, 1160, 1211, 1384, 1624, 1682, 1730, 2030, 2320, 2422, 2768, 3248, 3364, 3460, 4060, 4205, 4844, 5017, 5887, 6055, 6728, 6920, 8120, 8410, 9688, 10034, 11774, 12110, 13456, 13840, 16240, 16820, 19376, 20068, 23548, 24220, 25085, 29435, 33640, 35119, 40136, 47096, 48440, 50170, 58870, 67280, 70238, 80272, 94192, 96880, 100340, 117740, 140476, 145493, 175595, 200680, 235480, 280952, 290986, 351190, 401360, 470960, 561904, 581972, 702380, 727465, 1018451, 1163944, 1404760, 1454930, 2036902, 2327888, 2809520, 2909860, 4073804, 5092255, 5819720, 8147608, 10184510, 11639440, 16295216, 20369020, 40738040, 81476080]

約数ペア:

[(1, 81476080), (2, 40738040), (4, 20369020), (5, 16295216), (7, 11639440), (8, 10184510), (10, 8147608), (14, 5819720), (16, 5092255), (20, 4073804), (28, 2909860), (29, 2809520), (35, 2327888), (40, 2036902), (56, 1454930), (58, 1404760), (70, 1163944), (80, 1018451), (112, 727465), (116, 702380), (140, 581972), (145, 561904), (173, 470960), (203, 401360), (232, 351190), (280, 290986), (290, 280952), (346, 235480), (406, 200680), (464, 175595), (560, 145493), (580, 140476), (692, 117740), (812, 100340), (841, 96880), (865, 94192), (1015, 80272), (1160, 70238), (1211, 67280), (1384, 58870), (1624, 50170), (1682, 48440), (1730, 47096), (2030, 40136), (2320, 35119), (2422, 33640), (2768, 29435), (3248, 25085), (3364, 24220), (3460, 23548), (4060, 20068), (4205, 19376), (4844, 16820), (5017, 16240), (5887, 13840), (6055, 13456), (6728, 12110), (6920, 11774), (8120, 10034), (8410, 9688)]