21291315

素因数分解:

$3^1\times 5^1\times {\mathrm{239}}^1\times {\mathrm{5939}}^1$

素因数の和:6186

約数の個数: 16

約数和(自身を含む): 34214400

約数和(自身を除く): 12923085

約数列:

[1, 3, 5, 15, 239, 717, 1195, 3585, 5939, 17817, 29695, 89085, 1419421, 4258263, 7097105, 21291315]

約数ペア:

[(1, 21291315), (3, 7097105), (5, 4258263), (15, 1419421), (239, 89085), (717, 29695), (1195, 17817), (3585, 5939)]