19921664

素因数分解:

$2^8\times 7^1\times {\mathrm{11117}}^1$

素因数の和:11140

約数の個数: 36

約数和(自身を含む): 45450384

約数和(自身を除く): 25528720

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 64, 112, 128, 224, 256, 448, 896, 1792, 11117, 22234, 44468, 77819, 88936, 155638, 177872, 311276, 355744, 622552, 711488, 1245104, 1422976, 2490208, 2845952, 4980416, 9960832, 19921664]

約数ペア:

[(1, 19921664), (2, 9960832), (4, 4980416), (7, 2845952), (8, 2490208), (14, 1422976), (16, 1245104), (28, 711488), (32, 622552), (56, 355744), (64, 311276), (112, 177872), (128, 155638), (224, 88936), (256, 77819), (448, 44468), (896, 22234), (1792, 11117)]