20781824

素因数分解:

$2^8\times 7^1\times {\mathrm{11597}}^1$

素因数の和:11620

約数の個数: 36

約数和(自身を含む): 47412624

約数和(自身を除く): 26630800

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 64, 112, 128, 224, 256, 448, 896, 1792, 11597, 23194, 46388, 81179, 92776, 162358, 185552, 324716, 371104, 649432, 742208, 1298864, 1484416, 2597728, 2968832, 5195456, 10390912, 20781824]

約数ペア:

[(1, 20781824), (2, 10390912), (4, 5195456), (7, 2968832), (8, 2597728), (14, 1484416), (16, 1298864), (28, 742208), (32, 649432), (56, 371104), (64, 324716), (112, 185552), (128, 162358), (224, 92776), (256, 81179), (448, 46388), (896, 23194), (1792, 11597)]