21411416

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{205879}}^1$

素因数の和:205898

約数の個数: 16

約数和(自身を含む): 43234800

約数和(自身を除く): 21823384

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 205879, 411758, 823516, 1647032, 2676427, 5352854, 10705708, 21411416]

約数ペア:

[(1, 21411416), (2, 10705708), (4, 5352854), (8, 2676427), (13, 1647032), (26, 823516), (52, 411758), (104, 205879)]