21508256

素因数分解:

$2^5\times 7^2\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{43}}^1$

素因数の和:107

約数の個数: 144

約数和(自身を含む): 56881440

約数和(自身を除く): 35373184

約数列:

[1, 2, 4, 7, 8, 11, 14, 16, 22, 28, 29, 32, 43, 44, 49, 56, 58, 77, 86, 88, 98, 112, 116, 154, 172, 176, 196, 203, 224, 232, 301, 308, 319, 344, 352, 392, 406, 464, 473, 539, 602, 616, 638, 688, 784, 812, 928, 946, 1078, 1204, 1232, 1247, 1276, 1376, 1421, 1568, 1624, 1892, 2107, 2156, 2233, 2408, 2464, 2494, 2552, 2842, 3248, 3311, 3784, 4214, 4312, 4466, 4816, 4988, 5104, 5684, 6496, 6622, 7568, 8428, 8624, 8729, 8932, 9632, 9976, 10208, 11368, 13244, 13717, 15136, 15631, 16856, 17248, 17458, 17864, 19952, 22736, 23177, 26488, 27434, 31262, 33712, 34916, 35728, 39904, 45472, 46354, 52976, 54868, 61103, 62524, 67424, 69832, 71456, 92708, 96019, 105952, 109736, 122206, 125048, 139664, 185416, 192038, 219472, 244412, 250096, 279328, 370832, 384076, 438944, 488824, 500192, 672133, 741664, 768152, 977648, 1344266, 1536304, 1955296, 2688532, 3072608, 5377064, 10754128, 21508256]

約数ペア:

[(1, 21508256), (2, 10754128), (4, 5377064), (7, 3072608), (8, 2688532), (11, 1955296), (14, 1536304), (16, 1344266), (22, 977648), (28, 768152), (29, 741664), (32, 672133), (43, 500192), (44, 488824), (49, 438944), (56, 384076), (58, 370832), (77, 279328), (86, 250096), (88, 244412), (98, 219472), (112, 192038), (116, 185416), (154, 139664), (172, 125048), (176, 122206), (196, 109736), (203, 105952), (224, 96019), (232, 92708), (301, 71456), (308, 69832), (319, 67424), (344, 62524), (352, 61103), (392, 54868), (406, 52976), (464, 46354), (473, 45472), (539, 39904), (602, 35728), (616, 34916), (638, 33712), (688, 31262), (784, 27434), (812, 26488), (928, 23177), (946, 22736), (1078, 19952), (1204, 17864), (1232, 17458), (1247, 17248), (1276, 16856), (1376, 15631), (1421, 15136), (1568, 13717), (1624, 13244), (1892, 11368), (2107, 10208), (2156, 9976), (2233, 9632), (2408, 8932), (2464, 8729), (2494, 8624), (2552, 8428), (2842, 7568), (3248, 6622), (3311, 6496), (3784, 5684), (4214, 5104), (4312, 4988), (4466, 4816)]