21249536

素因数分解:

$2^9\times 7^3\times {\mathrm{11}}^2$

素因数の和:61

約数の個数: 120

約数和(自身を含む): 54423600

約数和(自身を除く): 33174064

約数列:

[1, 2, 4, 7, 8, 11, 14, 16, 22, 28, 32, 44, 49, 56, 64, 77, 88, 98, 112, 121, 128, 154, 176, 196, 224, 242, 256, 308, 343, 352, 392, 448, 484, 512, 539, 616, 686, 704, 784, 847, 896, 968, 1078, 1232, 1372, 1408, 1568, 1694, 1792, 1936, 2156, 2464, 2744, 2816, 3136, 3388, 3584, 3773, 3872, 4312, 4928, 5488, 5632, 5929, 6272, 6776, 7546, 7744, 8624, 9856, 10976, 11858, 12544, 13552, 15092, 15488, 17248, 19712, 21952, 23716, 25088, 27104, 30184, 30976, 34496, 39424, 41503, 43904, 47432, 54208, 60368, 61952, 68992, 83006, 87808, 94864, 108416, 120736, 137984, 166012, 175616, 189728, 216832, 241472, 275968, 332024, 379456, 433664, 482944, 664048, 758912, 965888, 1328096, 1517824, 1931776, 2656192, 3035648, 5312384, 10624768, 21249536]

約数ペア:

[(1, 21249536), (2, 10624768), (4, 5312384), (7, 3035648), (8, 2656192), (11, 1931776), (14, 1517824), (16, 1328096), (22, 965888), (28, 758912), (32, 664048), (44, 482944), (49, 433664), (56, 379456), (64, 332024), (77, 275968), (88, 241472), (98, 216832), (112, 189728), (121, 175616), (128, 166012), (154, 137984), (176, 120736), (196, 108416), (224, 94864), (242, 87808), (256, 83006), (308, 68992), (343, 61952), (352, 60368), (392, 54208), (448, 47432), (484, 43904), (512, 41503), (539, 39424), (616, 34496), (686, 30976), (704, 30184), (784, 27104), (847, 25088), (896, 23716), (968, 21952), (1078, 19712), (1232, 17248), (1372, 15488), (1408, 15092), (1568, 13552), (1694, 12544), (1792, 11858), (1936, 10976), (2156, 9856), (2464, 8624), (2744, 7744), (2816, 7546), (3136, 6776), (3388, 6272), (3584, 5929), (3773, 5632), (3872, 5488), (4312, 4928)]