21126420

素因数分解:

$2^2\times 3^8\times 5^1\times 7^1\times {\mathrm{23}}^1$

素因数の和:63

約数の個数: 216

約数和(自身を含む): 79357824

約数和(自身を除く): 58231404

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 23, 27, 28, 30, 35, 36, 42, 45, 46, 54, 60, 63, 69, 70, 81, 84, 90, 92, 105, 108, 115, 126, 135, 138, 140, 161, 162, 180, 189, 207, 210, 230, 243, 252, 270, 276, 315, 322, 324, 345, 378, 405, 414, 420, 460, 483, 486, 540, 567, 621, 630, 644, 690, 729, 756, 805, 810, 828, 945, 966, 972, 1035, 1134, 1215, 1242, 1260, 1380, 1449, 1458, 1610, 1620, 1701, 1863, 1890, 1932, 2070, 2187, 2268, 2415, 2430, 2484, 2835, 2898, 2916, 3105, 3220, 3402, 3645, 3726, 3780, 4140, 4347, 4374, 4830, 4860, 5103, 5589, 5670, 5796, 6210, 6561, 6804, 7245, 7290, 7452, 8505, 8694, 8748, 9315, 9660, 10206, 10935, 11178, 11340, 12420, 13041, 13122, 14490, 14580, 15309, 16767, 17010, 17388, 18630, 20412, 21735, 21870, 22356, 25515, 26082, 26244, 27945, 28980, 30618, 32805, 33534, 34020, 37260, 39123, 43470, 43740, 45927, 50301, 51030, 52164, 55890, 61236, 65205, 65610, 67068, 76545, 78246, 83835, 86940, 91854, 100602, 102060, 111780, 117369, 130410, 131220, 150903, 153090, 156492, 167670, 183708, 195615, 201204, 229635, 234738, 251505, 260820, 301806, 306180, 335340, 352107, 391230, 459270, 469476, 503010, 586845, 603612, 704214, 754515, 782460, 918540, 1006020, 1056321, 1173690, 1408428, 1509030, 1760535, 2112642, 2347380, 3018060, 3521070, 4225284, 5281605, 7042140, 10563210, 21126420]

約数ペア:

[(1, 21126420), (2, 10563210), (3, 7042140), (4, 5281605), (5, 4225284), (6, 3521070), (7, 3018060), (9, 2347380), (10, 2112642), (12, 1760535), (14, 1509030), (15, 1408428), (18, 1173690), (20, 1056321), (21, 1006020), (23, 918540), (27, 782460), (28, 754515), (30, 704214), (35, 603612), (36, 586845), (42, 503010), (45, 469476), (46, 459270), (54, 391230), (60, 352107), (63, 335340), (69, 306180), (70, 301806), (81, 260820), (84, 251505), (90, 234738), (92, 229635), (105, 201204), (108, 195615), (115, 183708), (126, 167670), (135, 156492), (138, 153090), (140, 150903), (161, 131220), (162, 130410), (180, 117369), (189, 111780), (207, 102060), (210, 100602), (230, 91854), (243, 86940), (252, 83835), (270, 78246), (276, 76545), (315, 67068), (322, 65610), (324, 65205), (345, 61236), (378, 55890), (405, 52164), (414, 51030), (420, 50301), (460, 45927), (483, 43740), (486, 43470), (540, 39123), (567, 37260), (621, 34020), (630, 33534), (644, 32805), (690, 30618), (729, 28980), (756, 27945), (805, 26244), (810, 26082), (828, 25515), (945, 22356), (966, 21870), (972, 21735), (1035, 20412), (1134, 18630), (1215, 17388), (1242, 17010), (1260, 16767), (1380, 15309), (1449, 14580), (1458, 14490), (1610, 13122), (1620, 13041), (1701, 12420), (1863, 11340), (1890, 11178), (1932, 10935), (2070, 10206), (2187, 9660), (2268, 9315), (2415, 8748), (2430, 8694), (2484, 8505), (2835, 7452), (2898, 7290), (2916, 7245), (3105, 6804), (3220, 6561), (3402, 6210), (3645, 5796), (3726, 5670), (3780, 5589), (4140, 5103), (4347, 4860), (4374, 4830)]