21688.000000

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{3511}}^1$

素因数の和:3532

約数の個数: 20

約数和(自身を含む): 1524208

約数和(自身を除く): 793920

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 3511, 7022, 14044, 28088, 45643, 56176, 91286, 182572, 365144, 730288]

約数ペア:

[(1, 730288), (2, 365144), (4, 182572), (8, 91286), (13, 56176), (16, 45643), (26, 28088), (52, 14044), (104, 7022), (208, 3511)]