21043456

素因数分解:

$2^8\times 7^1\times {\mathrm{11743}}^1$

素因数の和:11766

約数の個数: 36

約数和(自身を含む): 48009472

約数和(自身を除く): 26966016

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 64, 112, 128, 224, 256, 448, 896, 1792, 11743, 23486, 46972, 82201, 93944, 164402, 187888, 328804, 375776, 657608, 751552, 1315216, 1503104, 2630432, 3006208, 5260864, 10521728, 21043456]

約数ペア:

[(1, 21043456), (2, 10521728), (4, 5260864), (7, 3006208), (8, 2630432), (14, 1503104), (16, 1315216), (28, 751552), (32, 657608), (56, 375776), (64, 328804), (112, 187888), (128, 164402), (224, 93944), (256, 82201), (448, 46972), (896, 23486), (1792, 11743)]