19989399

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{167}}^1\times {\mathrm{2347}}^1$

素因数の和:2534

約数の個数: 16

約数和(自身を含む): 28401408

約数和(自身を除く): 8412009

約数列:

[1, 3, 17, 51, 167, 501, 2347, 2839, 7041, 8517, 39899, 119697, 391949, 1175847, 6663133, 19989399]

約数ペア:

[(1, 19989399), (3, 6663133), (17, 1175847), (51, 391949), (167, 119697), (501, 39899), (2347, 8517), (2839, 7041)]