1991231160

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{101}}^1\times {\mathrm{8647}}^1$

素因数の和:8781

約数の個数: 128

約数和(自身を含む): 6351091200

約数和(自身を除く): 4359860040

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 19, 20, 24, 30, 38, 40, 57, 60, 76, 95, 101, 114, 120, 152, 190, 202, 228, 285, 303, 380, 404, 456, 505, 570, 606, 760, 808, 1010, 1140, 1212, 1515, 1919, 2020, 2280, 2424, 3030, 3838, 4040, 5757, 6060, 7676, 8647, 9595, 11514, 12120, 15352, 17294, 19190, 23028, 25941, 28785, 34588, 38380, 43235, 46056, 51882, 57570, 69176, 76760, 86470, 103764, 115140, 129705, 164293, 172940, 207528, 230280, 259410, 328586, 345880, 492879, 518820, 657172, 821465, 873347, 985758, 1037640, 1314344, 1642930, 1746694, 1971516, 2464395, 2620041, 3285860, 3493388, 3943032, 4366735, 4928790, 5240082, 6571720, 6986776, 8733470, 9857580, 10480164, 13100205, 16593593, 17466940, 19715160, 20960328, 26200410, 33187186, 34933880, 49780779, 52400820, 66374372, 82967965, 99561558, 104801640, 132748744, 165935930, 199123116, 248903895, 331871860, 398246232, 497807790, 663743720, 995615580, 1991231160]

約数ペア:

[(1, 1991231160), (2, 995615580), (3, 663743720), (4, 497807790), (5, 398246232), (6, 331871860), (8, 248903895), (10, 199123116), (12, 165935930), (15, 132748744), (19, 104801640), (20, 99561558), (24, 82967965), (30, 66374372), (38, 52400820), (40, 49780779), (57, 34933880), (60, 33187186), (76, 26200410), (95, 20960328), (101, 19715160), (114, 17466940), (120, 16593593), (152, 13100205), (190, 10480164), (202, 9857580), (228, 8733470), (285, 6986776), (303, 6571720), (380, 5240082), (404, 4928790), (456, 4366735), (505, 3943032), (570, 3493388), (606, 3285860), (760, 2620041), (808, 2464395), (1010, 1971516), (1140, 1746694), (1212, 1642930), (1515, 1314344), (1919, 1037640), (2020, 985758), (2280, 873347), (2424, 821465), (3030, 657172), (3838, 518820), (4040, 492879), (5757, 345880), (6060, 328586), (7676, 259410), (8647, 230280), (9595, 207528), (11514, 172940), (12120, 164293), (15352, 129705), (17294, 115140), (19190, 103764), (23028, 86470), (25941, 76760), (28785, 69176), (34588, 57570), (38380, 51882), (43235, 46056)]