20520656

素因数分解:

$2^4\times {\mathrm{13}}^2\times {\mathrm{7589}}^1$

素因数の和:7623

約数の個数: 30

約数和(自身を含む): 43058070

約数和(自身を除く): 22537414

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 169, 208, 338, 676, 1352, 2704, 7589, 15178, 30356, 60712, 98657, 121424, 197314, 394628, 789256, 1282541, 1578512, 2565082, 5130164, 10260328, 20520656]

約数ペア:

[(1, 20520656), (2, 10260328), (4, 5130164), (8, 2565082), (13, 1578512), (16, 1282541), (26, 789256), (52, 394628), (104, 197314), (169, 121424), (208, 98657), (338, 60712), (676, 30356), (1352, 15178), (2704, 7589)]