15721456

素因数分解:

$2^4\times {\mathrm{139}}^1\times {\mathrm{7069}}^1$

素因数の和:7216

約数の個数: 20

約数和(自身を含む): 30683800

約数和(自身を除く): 14962344

約数列:

[1, 2, 4, 8, 16, 139, 278, 556, 1112, 2224, 7069, 14138, 28276, 56552, 113104, 982591, 1965182, 3930364, 7860728, 15721456]

約数ペア:

[(1, 15721456), (2, 7860728), (4, 3930364), (8, 1965182), (16, 982591), (139, 113104), (278, 56552), (556, 28276), (1112, 14138), (2224, 7069)]