81857920

素因数分解:

$2^7\times 5^1\times {\mathrm{23}}^1\times {\mathrm{67}}^1\times {\mathrm{83}}^1$

素因数の和:192

約数の個数: 128

約数和(自身を含む): 209744640

約数和(自身を除く): 127886720

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 32, 40, 46, 64, 67, 80, 83, 92, 115, 128, 134, 160, 166, 184, 230, 268, 320, 332, 335, 368, 415, 460, 536, 640, 664, 670, 736, 830, 920, 1072, 1328, 1340, 1472, 1541, 1660, 1840, 1909, 2144, 2656, 2680, 2944, 3082, 3320, 3680, 3818, 4288, 5312, 5360, 5561, 6164, 6640, 7360, 7636, 7705, 8576, 9545, 10624, 10720, 11122, 12328, 13280, 14720, 15272, 15410, 19090, 21440, 22244, 24656, 26560, 27805, 30544, 30820, 38180, 42880, 44488, 49312, 53120, 55610, 61088, 61640, 76360, 88976, 98624, 111220, 122176, 123280, 127903, 152720, 177952, 197248, 222440, 244352, 246560, 255806, 305440, 355904, 444880, 493120, 511612, 610880, 639515, 711808, 889760, 986240, 1023224, 1221760, 1279030, 1779520, 2046448, 2558060, 3559040, 4092896, 5116120, 8185792, 10232240, 16371584, 20464480, 40928960, 81857920]

約数ペア:

[(1, 81857920), (2, 40928960), (4, 20464480), (5, 16371584), (8, 10232240), (10, 8185792), (16, 5116120), (20, 4092896), (23, 3559040), (32, 2558060), (40, 2046448), (46, 1779520), (64, 1279030), (67, 1221760), (80, 1023224), (83, 986240), (92, 889760), (115, 711808), (128, 639515), (134, 610880), (160, 511612), (166, 493120), (184, 444880), (230, 355904), (268, 305440), (320, 255806), (332, 246560), (335, 244352), (368, 222440), (415, 197248), (460, 177952), (536, 152720), (640, 127903), (664, 123280), (670, 122176), (736, 111220), (830, 98624), (920, 88976), (1072, 76360), (1328, 61640), (1340, 61088), (1472, 55610), (1541, 53120), (1660, 49312), (1840, 44488), (1909, 42880), (2144, 38180), (2656, 30820), (2680, 30544), (2944, 27805), (3082, 26560), (3320, 24656), (3680, 22244), (3818, 21440), (4288, 19090), (5312, 15410), (5360, 15272), (5561, 14720), (6164, 13280), (6640, 12328), (7360, 11122), (7636, 10720), (7705, 10624), (8576, 9545)]