21121445840

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{263}}^2\times {\mathrm{347}}^1$

素因数の和:897

約数の個数: 120

約数和(自身を含む): 53931110688

約数和(自身を除く): 32809664848

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 176, 220, 263, 347, 440, 526, 694, 880, 1052, 1315, 1388, 1735, 2104, 2630, 2776, 2893, 3470, 3817, 4208, 5260, 5552, 5786, 6940, 7634, 10520, 11572, 13880, 14465, 15268, 19085, 21040, 23144, 27760, 28930, 30536, 38170, 46288, 57860, 61072, 69169, 76340, 91261, 115720, 138338, 152680, 182522, 231440, 276676, 305360, 345845, 365044, 456305, 553352, 691690, 730088, 760859, 912610, 1003871, 1106704, 1383380, 1460176, 1521718, 1825220, 2007742, 2766760, 3043436, 3650440, 3804295, 4015484, 5019355, 5533520, 6086872, 7300880, 7608590, 8030968, 10038710, 12173744, 15217180, 16061936, 20077420, 24001643, 30434360, 40154840, 48003286, 60868720, 80309680, 96006572, 120008215, 192013144, 240016430, 264018073, 384026288, 480032860, 528036146, 960065720, 1056072292, 1320090365, 1920131440, 2112144584, 2640180730, 4224289168, 5280361460, 10560722920, 21121445840]

約数ペア:

[(1, 21121445840), (2, 10560722920), (4, 5280361460), (5, 4224289168), (8, 2640180730), (10, 2112144584), (11, 1920131440), (16, 1320090365), (20, 1056072292), (22, 960065720), (40, 528036146), (44, 480032860), (55, 384026288), (80, 264018073), (88, 240016430), (110, 192013144), (176, 120008215), (220, 96006572), (263, 80309680), (347, 60868720), (440, 48003286), (526, 40154840), (694, 30434360), (880, 24001643), (1052, 20077420), (1315, 16061936), (1388, 15217180), (1735, 12173744), (2104, 10038710), (2630, 8030968), (2776, 7608590), (2893, 7300880), (3470, 6086872), (3817, 5533520), (4208, 5019355), (5260, 4015484), (5552, 3804295), (5786, 3650440), (6940, 3043436), (7634, 2766760), (10520, 2007742), (11572, 1825220), (13880, 1521718), (14465, 1460176), (15268, 1383380), (19085, 1106704), (21040, 1003871), (23144, 912610), (27760, 760859), (28930, 730088), (30536, 691690), (38170, 553352), (46288, 456305), (57860, 365044), (61072, 345845), (69169, 305360), (76340, 276676), (91261, 231440), (115720, 182522), (138338, 152680)]