21155344

素因数分解:

$2^4\times 7^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{271}}^1$

素因数の和:344

約数の個数: 80

約数和(自身を含む): 50996736

約数和(自身を除く): 29841392

約数列:

[1, 2, 4, 7, 8, 14, 16, 17, 28, 34, 41, 56, 68, 82, 112, 119, 136, 164, 238, 271, 272, 287, 328, 476, 542, 574, 656, 697, 952, 1084, 1148, 1394, 1897, 1904, 2168, 2296, 2788, 3794, 4336, 4592, 4607, 4879, 5576, 7588, 9214, 9758, 11111, 11152, 15176, 18428, 19516, 22222, 30352, 32249, 36856, 39032, 44444, 64498, 73712, 77777, 78064, 88888, 128996, 155554, 177776, 188887, 257992, 311108, 377774, 515984, 622216, 755548, 1244432, 1322209, 1511096, 2644418, 3022192, 5288836, 10577672, 21155344]

約数ペア:

[(1, 21155344), (2, 10577672), (4, 5288836), (7, 3022192), (8, 2644418), (14, 1511096), (16, 1322209), (17, 1244432), (28, 755548), (34, 622216), (41, 515984), (56, 377774), (68, 311108), (82, 257992), (112, 188887), (119, 177776), (136, 155554), (164, 128996), (238, 88888), (271, 78064), (272, 77777), (287, 73712), (328, 64498), (476, 44444), (542, 39032), (574, 36856), (656, 32249), (697, 30352), (952, 22222), (1084, 19516), (1148, 18428), (1394, 15176), (1897, 11152), (1904, 11111), (2168, 9758), (2296, 9214), (2788, 7588), (3794, 5576), (4336, 4879), (4592, 4607)]