28216880

素因数分解:

$2^4\times 5^1\times {\mathrm{352711}}^1$

素因数の和:352724

約数の個数: 20

約数和(自身を含む): 65604432

約数和(自身を除く): 37387552

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 352711, 705422, 1410844, 1763555, 2821688, 3527110, 5643376, 7054220, 14108440, 28216880]

約数ペア:

[(1, 28216880), (2, 14108440), (4, 7054220), (5, 5643376), (8, 3527110), (10, 2821688), (16, 1763555), (20, 1410844), (40, 705422), (80, 352711)]