19724709

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{439}}^1\times {\mathrm{881}}^1$

素因数の和:1340

約数の個数: 16

約数和(自身を含む): 27941760

約数和(自身を除く): 8217051

約数列:

[1, 3, 17, 51, 439, 881, 1317, 2643, 7463, 14977, 22389, 44931, 386759, 1160277, 6574903, 19724709]

約数ペア:

[(1, 19724709), (3, 6574903), (17, 1160277), (51, 386759), (439, 44931), (881, 22389), (1317, 14977), (2643, 7463)]