20371456

素因数分解:

$2^{11}\times 7^3\times {\mathrm{29}}^1$

素因数の和:72

約数の個数: 96

約数和(自身を含む): 49140000

約数和(自身を除く): 28768544

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 29, 32, 49, 56, 58, 64, 98, 112, 116, 128, 196, 203, 224, 232, 256, 343, 392, 406, 448, 464, 512, 686, 784, 812, 896, 928, 1024, 1372, 1421, 1568, 1624, 1792, 1856, 2048, 2744, 2842, 3136, 3248, 3584, 3712, 5488, 5684, 6272, 6496, 7168, 7424, 9947, 10976, 11368, 12544, 12992, 14336, 14848, 19894, 21952, 22736, 25088, 25984, 29696, 39788, 43904, 45472, 50176, 51968, 59392, 79576, 87808, 90944, 100352, 103936, 159152, 175616, 181888, 207872, 318304, 351232, 363776, 415744, 636608, 702464, 727552, 1273216, 1455104, 2546432, 2910208, 5092864, 10185728, 20371456]

約数ペア:

[(1, 20371456), (2, 10185728), (4, 5092864), (7, 2910208), (8, 2546432), (14, 1455104), (16, 1273216), (28, 727552), (29, 702464), (32, 636608), (49, 415744), (56, 363776), (58, 351232), (64, 318304), (98, 207872), (112, 181888), (116, 175616), (128, 159152), (196, 103936), (203, 100352), (224, 90944), (232, 87808), (256, 79576), (343, 59392), (392, 51968), (406, 50176), (448, 45472), (464, 43904), (512, 39788), (686, 29696), (784, 25984), (812, 25088), (896, 22736), (928, 21952), (1024, 19894), (1372, 14848), (1421, 14336), (1568, 12992), (1624, 12544), (1792, 11368), (1856, 10976), (2048, 9947), (2744, 7424), (2842, 7168), (3136, 6496), (3248, 6272), (3584, 5684), (3712, 5488)]