19874889

素因数分解:

$3^4\times {\mathrm{29}}^1\times {\mathrm{8461}}^1$

素因数の和:8502

約数の個数: 20

約数和(自身を含む): 30717060

約数和(自身を除く): 10842171

約数列:

[1, 3, 9, 27, 29, 81, 87, 261, 783, 2349, 8461, 25383, 76149, 228447, 245369, 685341, 736107, 2208321, 6624963, 19874889]

約数ペア:

[(1, 19874889), (3, 6624963), (9, 2208321), (27, 736107), (29, 685341), (81, 245369), (87, 228447), (261, 76149), (783, 25383), (2349, 8461)]