123647920

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{1979}}^1$

素因数の和:2074

約数の個数: 80

約数和(自身を含む): 318193920

約数和(自身を除く): 194546000

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 71, 80, 88, 110, 142, 176, 220, 284, 355, 440, 568, 710, 781, 880, 1136, 1420, 1562, 1979, 2840, 3124, 3905, 3958, 5680, 6248, 7810, 7916, 9895, 12496, 15620, 15832, 19790, 21769, 31240, 31664, 39580, 43538, 62480, 79160, 87076, 108845, 140509, 158320, 174152, 217690, 281018, 348304, 435380, 562036, 702545, 870760, 1124072, 1405090, 1545599, 1741520, 2248144, 2810180, 3091198, 5620360, 6182396, 7727995, 11240720, 12364792, 15455990, 24729584, 30911980, 61823960, 123647920]

約数ペア:

[(1, 123647920), (2, 61823960), (4, 30911980), (5, 24729584), (8, 15455990), (10, 12364792), (11, 11240720), (16, 7727995), (20, 6182396), (22, 5620360), (40, 3091198), (44, 2810180), (55, 2248144), (71, 1741520), (80, 1545599), (88, 1405090), (110, 1124072), (142, 870760), (176, 702545), (220, 562036), (284, 435380), (355, 348304), (440, 281018), (568, 217690), (710, 174152), (781, 158320), (880, 140509), (1136, 108845), (1420, 87076), (1562, 79160), (1979, 62480), (2840, 43538), (3124, 39580), (3905, 31664), (3958, 31240), (5680, 21769), (6248, 19790), (7810, 15832), (7916, 15620), (9895, 12496)]