16987105

素因数分解:

$5^1\times {\mathrm{71}}^1\times {\mathrm{109}}^1\times {\mathrm{439}}^1$

素因数の和:624

約数の個数: 16

約数和(自身を含む): 20908800

約数和(自身を除く): 3921695

約数列:

[1, 5, 71, 109, 355, 439, 545, 2195, 7739, 31169, 38695, 47851, 155845, 239255, 3397421, 16987105]

約数ペア:

[(1, 16987105), (5, 3397421), (71, 239255), (109, 155845), (355, 47851), (439, 38695), (545, 31169), (2195, 7739)]