20664553

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{5281}}^1$

素因数の和:5344

約数の個数: 16

約数和(自身を含む): 26029696

約数和(自身を除く): 5365143

約数列:

[1, 7, 13, 43, 91, 301, 559, 3913, 5281, 36967, 68653, 227083, 480571, 1589581, 2952079, 20664553]

約数ペア:

[(1, 20664553), (7, 2952079), (13, 1589581), (43, 480571), (91, 227083), (301, 68653), (559, 36967), (3913, 5281)]