19988935

素因数分解:

$5^1\times {\mathrm{41}}^1\times {\mathrm{281}}^1\times {\mathrm{347}}^1$

素因数の和:674

約数の個数: 16

約数和(自身を含む): 24730272

約数和(自身を除く): 4741337

約数列:

[1, 5, 41, 205, 281, 347, 1405, 1735, 11521, 14227, 57605, 71135, 97507, 487535, 3997787, 19988935]

約数ペア:

[(1, 19988935), (5, 3997787), (41, 487535), (205, 97507), (281, 71135), (347, 57605), (1405, 14227), (1735, 11521)]