71988895

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{421}}^1\times {\mathrm{3109}}^1$

素因数の和:3546

約数の個数: 16

約数和(自身を含む): 94494240

約数和(自身を除く): 22505345

約数列:

[1, 5, 11, 55, 421, 2105, 3109, 4631, 15545, 23155, 34199, 170995, 1308889, 6544445, 14397779, 71988895]

約数ペア:

[(1, 71988895), (5, 14397779), (11, 6544445), (55, 1308889), (421, 170995), (2105, 34199), (3109, 23155), (4631, 15545)]