21257296

素因数分解:

$2^4\times {\mathrm{83}}^1\times {\mathrm{16007}}^1$

素因数の和:16098

約数の個数: 20

約数和(自身を含む): 41684832

約数和(自身を除く): 20427536

約数列:

[1, 2, 4, 8, 16, 83, 166, 332, 664, 1328, 16007, 32014, 64028, 128056, 256112, 1328581, 2657162, 5314324, 10628648, 21257296]

約数ペア:

[(1, 21257296), (2, 10628648), (4, 5314324), (8, 2657162), (16, 1328581), (83, 256112), (166, 128056), (332, 64028), (664, 32014), (1328, 16007)]