21708728

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{159623}}^1$

素因数の和:159646

約数の個数: 16

約数和(自身を含む): 43098480

約数和(自身を除く): 21389752

約数列:

[1, 2, 4, 8, 17, 34, 68, 136, 159623, 319246, 638492, 1276984, 2713591, 5427182, 10854364, 21708728]

約数ペア:

[(1, 21708728), (2, 10854364), (4, 5427182), (8, 2713591), (17, 1276984), (34, 638492), (68, 319246), (136, 159623)]