21124096

素因数分解:

$2^{10}\times 7^2\times {\mathrm{421}}^1$

素因数の和:455

約数の個数: 66

約数和(自身を含む): 49238538

約数和(自身を除く): 28114442

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 49, 56, 64, 98, 112, 128, 196, 224, 256, 392, 421, 448, 512, 784, 842, 896, 1024, 1568, 1684, 1792, 2947, 3136, 3368, 3584, 5894, 6272, 6736, 7168, 11788, 12544, 13472, 20629, 23576, 25088, 26944, 41258, 47152, 50176, 53888, 82516, 94304, 107776, 165032, 188608, 215552, 330064, 377216, 431104, 660128, 754432, 1320256, 1508864, 2640512, 3017728, 5281024, 10562048, 21124096]

約数ペア:

[(1, 21124096), (2, 10562048), (4, 5281024), (7, 3017728), (8, 2640512), (14, 1508864), (16, 1320256), (28, 754432), (32, 660128), (49, 431104), (56, 377216), (64, 330064), (98, 215552), (112, 188608), (128, 165032), (196, 107776), (224, 94304), (256, 82516), (392, 53888), (421, 50176), (448, 47152), (512, 41258), (784, 26944), (842, 25088), (896, 23576), (1024, 20629), (1568, 13472), (1684, 12544), (1792, 11788), (2947, 7168), (3136, 6736), (3368, 6272), (3584, 5894)]