128927920

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^2\times {\mathrm{19}}^1\times {\mathrm{701}}^1$

素因数の和:755

約数の個数: 120

約数和(自身を含む): 347321520

約数和(自身を除く): 218393600

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 19, 20, 22, 38, 40, 44, 55, 76, 80, 88, 95, 110, 121, 152, 176, 190, 209, 220, 242, 304, 380, 418, 440, 484, 605, 701, 760, 836, 880, 968, 1045, 1210, 1402, 1520, 1672, 1936, 2090, 2299, 2420, 2804, 3344, 3505, 4180, 4598, 4840, 5608, 7010, 7711, 8360, 9196, 9680, 11216, 11495, 13319, 14020, 15422, 16720, 18392, 22990, 26638, 28040, 30844, 36784, 38555, 45980, 53276, 56080, 61688, 66595, 77110, 84821, 91960, 106552, 123376, 133190, 146509, 154220, 169642, 183920, 213104, 266380, 293018, 308440, 339284, 424105, 532760, 586036, 616880, 678568, 732545, 848210, 1065520, 1172072, 1357136, 1465090, 1611599, 1696420, 2344144, 2930180, 3223198, 3392840, 5860360, 6446396, 6785680, 8057995, 11720720, 12892792, 16115990, 25785584, 32231980, 64463960, 128927920]

約数ペア:

[(1, 128927920), (2, 64463960), (4, 32231980), (5, 25785584), (8, 16115990), (10, 12892792), (11, 11720720), (16, 8057995), (19, 6785680), (20, 6446396), (22, 5860360), (38, 3392840), (40, 3223198), (44, 2930180), (55, 2344144), (76, 1696420), (80, 1611599), (88, 1465090), (95, 1357136), (110, 1172072), (121, 1065520), (152, 848210), (176, 732545), (190, 678568), (209, 616880), (220, 586036), (242, 532760), (304, 424105), (380, 339284), (418, 308440), (440, 293018), (484, 266380), (605, 213104), (701, 183920), (760, 169642), (836, 154220), (880, 146509), (968, 133190), (1045, 123376), (1210, 106552), (1402, 91960), (1520, 84821), (1672, 77110), (1936, 66595), (2090, 61688), (2299, 56080), (2420, 53276), (2804, 45980), (3344, 38555), (3505, 36784), (4180, 30844), (4598, 28040), (4840, 26638), (5608, 22990), (7010, 18392), (7711, 16720), (8360, 15422), (9196, 14020), (9680, 13319), (11216, 11495)]