19779109

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{71}}^1\times {\mathrm{2341}}^1$

素因数の和:2436

約数の個数: 16

約数和(自身を含む): 24281856

約数和(自身を除く): 4502747

約数列:

[1, 7, 17, 71, 119, 497, 1207, 2341, 8449, 16387, 39797, 166211, 278579, 1163477, 2825587, 19779109]

約数ペア:

[(1, 19779109), (7, 2825587), (17, 1163477), (71, 278579), (119, 166211), (497, 39797), (1207, 16387), (2341, 8449)]