28721392

素因数分解:

$2^4\times 7^1\times {\mathrm{256441}}^1$

素因数の和:256456

約数の個数: 20

約数和(自身を含む): 63597616

約数和(自身を除く): 34876224

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 256441, 512882, 1025764, 1795087, 2051528, 3590174, 4103056, 7180348, 14360696, 28721392]

約数ペア:

[(1, 28721392), (2, 14360696), (4, 7180348), (7, 4103056), (8, 3590174), (14, 2051528), (16, 1795087), (28, 1025764), (56, 512882), (112, 256441)]