21059608

素因数分解:

$2^3\times {\mathrm{257}}^1\times {\mathrm{10243}}^1$

素因数の和:10506

約数の個数: 16

約数和(自身を含む): 39644280

約数和(自身を除く): 18584672

約数列:

[1, 2, 4, 8, 257, 514, 1028, 2056, 10243, 20486, 40972, 81944, 2632451, 5264902, 10529804, 21059608]

約数ペア:

[(1, 21059608), (2, 10529804), (4, 5264902), (8, 2632451), (257, 81944), (514, 40972), (1028, 20486), (2056, 10243)]