21419528

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{205957}}^1$

素因数の和:205976

約数の個数: 16

約数和(自身を含む): 43251180

約数和(自身を除く): 21831652

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 205957, 411914, 823828, 1647656, 2677441, 5354882, 10709764, 21419528]

約数ペア:

[(1, 21419528), (2, 10709764), (4, 5354882), (8, 2677441), (13, 1647656), (26, 823828), (52, 411914), (104, 205957)]