128408720

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{3559}}^1$

素因数の和:3624

約数の個数: 80

約数和(自身を含む): 333728640

約数和(自身を除く): 205319920

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 41, 44, 55, 80, 82, 88, 110, 164, 176, 205, 220, 328, 410, 440, 451, 656, 820, 880, 902, 1640, 1804, 2255, 3280, 3559, 3608, 4510, 7118, 7216, 9020, 14236, 17795, 18040, 28472, 35590, 36080, 39149, 56944, 71180, 78298, 142360, 145919, 156596, 195745, 284720, 291838, 313192, 391490, 583676, 626384, 729595, 782980, 1167352, 1459190, 1565960, 1605109, 2334704, 2918380, 3131920, 3210218, 5836760, 6420436, 8025545, 11673520, 12840872, 16051090, 25681744, 32102180, 64204360, 128408720]

約数ペア:

[(1, 128408720), (2, 64204360), (4, 32102180), (5, 25681744), (8, 16051090), (10, 12840872), (11, 11673520), (16, 8025545), (20, 6420436), (22, 5836760), (40, 3210218), (41, 3131920), (44, 2918380), (55, 2334704), (80, 1605109), (82, 1565960), (88, 1459190), (110, 1167352), (164, 782980), (176, 729595), (205, 626384), (220, 583676), (328, 391490), (410, 313192), (440, 291838), (451, 284720), (656, 195745), (820, 156596), (880, 145919), (902, 142360), (1640, 78298), (1804, 71180), (2255, 56944), (3280, 39149), (3559, 36080), (3608, 35590), (4510, 28472), (7118, 18040), (7216, 17795), (9020, 14236)]