21493491

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{151}}^1\times {\mathrm{2791}}^1$

素因数の和:2962

約数の個数: 16

約数和(自身を含む): 30555648

約数和(自身を除く): 9062157

約数列:

[1, 3, 17, 51, 151, 453, 2567, 2791, 7701, 8373, 47447, 142341, 421441, 1264323, 7164497, 21493491]

約数ペア:

[(1, 21493491), (3, 7164497), (17, 1264323), (51, 421441), (151, 142341), (453, 47447), (2567, 8373), (2791, 7701)]