20547968

素因数分解:

$2^7\times 7^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1$

素因数の和:128

約数の個数: 128

約数和(自身を含む): 52876800

約数和(自身を除く): 32328832

約数列:

[1, 2, 4, 7, 8, 14, 16, 17, 19, 28, 32, 34, 38, 56, 64, 68, 71, 76, 112, 119, 128, 133, 136, 142, 152, 224, 238, 266, 272, 284, 304, 323, 448, 476, 497, 532, 544, 568, 608, 646, 896, 952, 994, 1064, 1088, 1136, 1207, 1216, 1292, 1349, 1904, 1988, 2128, 2176, 2261, 2272, 2414, 2432, 2584, 2698, 3808, 3976, 4256, 4522, 4544, 4828, 5168, 5396, 7616, 7952, 8449, 8512, 9044, 9088, 9443, 9656, 10336, 10792, 15232, 15904, 16898, 17024, 18088, 18886, 19312, 20672, 21584, 22933, 31808, 33796, 36176, 37772, 38624, 41344, 43168, 45866, 63616, 67592, 72352, 75544, 77248, 86336, 91732, 135184, 144704, 151088, 154496, 160531, 172672, 183464, 270368, 289408, 302176, 321062, 366928, 540736, 604352, 642124, 733856, 1081472, 1208704, 1284248, 1467712, 2568496, 2935424, 5136992, 10273984, 20547968]

約数ペア:

[(1, 20547968), (2, 10273984), (4, 5136992), (7, 2935424), (8, 2568496), (14, 1467712), (16, 1284248), (17, 1208704), (19, 1081472), (28, 733856), (32, 642124), (34, 604352), (38, 540736), (56, 366928), (64, 321062), (68, 302176), (71, 289408), (76, 270368), (112, 183464), (119, 172672), (128, 160531), (133, 154496), (136, 151088), (142, 144704), (152, 135184), (224, 91732), (238, 86336), (266, 77248), (272, 75544), (284, 72352), (304, 67592), (323, 63616), (448, 45866), (476, 43168), (497, 41344), (532, 38624), (544, 37772), (568, 36176), (608, 33796), (646, 31808), (896, 22933), (952, 21584), (994, 20672), (1064, 19312), (1088, 18886), (1136, 18088), (1207, 17024), (1216, 16898), (1292, 15904), (1349, 15232), (1904, 10792), (1988, 10336), (2128, 9656), (2176, 9443), (2261, 9088), (2272, 9044), (2414, 8512), (2432, 8449), (2584, 7952), (2698, 7616), (3808, 5396), (3976, 5168), (4256, 4828), (4522, 4544)]