21880656

素因数分解:

$2^4\times 3^2\times 7^3\times {\mathrm{443}}^1$

素因数の和:478

約数の個数: 120

約数和(自身を含む): 71572800

約数和(自身を除く): 49692144

約数列:

[1, 2, 3, 4, 6, 7, 8, 9, 12, 14, 16, 18, 21, 24, 28, 36, 42, 48, 49, 56, 63, 72, 84, 98, 112, 126, 144, 147, 168, 196, 252, 294, 336, 343, 392, 441, 443, 504, 588, 686, 784, 882, 886, 1008, 1029, 1176, 1329, 1372, 1764, 1772, 2058, 2352, 2658, 2744, 3087, 3101, 3528, 3544, 3987, 4116, 5316, 5488, 6174, 6202, 7056, 7088, 7974, 8232, 9303, 10632, 12348, 12404, 15948, 16464, 18606, 21264, 21707, 24696, 24808, 27909, 31896, 37212, 43414, 49392, 49616, 55818, 63792, 65121, 74424, 86828, 111636, 130242, 148848, 151949, 173656, 195363, 223272, 260484, 303898, 347312, 390726, 446544, 455847, 520968, 607796, 781452, 911694, 1041936, 1215592, 1367541, 1562904, 1823388, 2431184, 2735082, 3125808, 3646776, 5470164, 7293552, 10940328, 21880656]

約数ペア:

[(1, 21880656), (2, 10940328), (3, 7293552), (4, 5470164), (6, 3646776), (7, 3125808), (8, 2735082), (9, 2431184), (12, 1823388), (14, 1562904), (16, 1367541), (18, 1215592), (21, 1041936), (24, 911694), (28, 781452), (36, 607796), (42, 520968), (48, 455847), (49, 446544), (56, 390726), (63, 347312), (72, 303898), (84, 260484), (98, 223272), (112, 195363), (126, 173656), (144, 151949), (147, 148848), (168, 130242), (196, 111636), (252, 86828), (294, 74424), (336, 65121), (343, 63792), (392, 55818), (441, 49616), (443, 49392), (504, 43414), (588, 37212), (686, 31896), (784, 27909), (882, 24808), (886, 24696), (1008, 21707), (1029, 21264), (1176, 18606), (1329, 16464), (1372, 15948), (1764, 12404), (1772, 12348), (2058, 10632), (2352, 9303), (2658, 8232), (2744, 7974), (3087, 7088), (3101, 7056), (3528, 6202), (3544, 6174), (3987, 5488), (4116, 5316)]