21701368

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{208667}}^1$

素因数の和:208686

約数の個数: 16

約数和(自身を含む): 43820280

約数和(自身を除く): 22118912

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 208667, 417334, 834668, 1669336, 2712671, 5425342, 10850684, 21701368]

約数ペア:

[(1, 21701368), (2, 10850684), (4, 5425342), (8, 2712671), (13, 1669336), (26, 834668), (52, 417334), (104, 208667)]