20730871

素因数分解:

$7^2\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{607}}^1$

素因数の和:679

約数の個数: 24

約数和(自身を含む): 26199936

約数和(自身を除く): 5469065

約数列:

[1, 7, 17, 41, 49, 119, 287, 607, 697, 833, 2009, 4249, 4879, 10319, 24887, 29743, 34153, 72233, 174209, 423079, 505631, 1219463, 2961553, 20730871]

約数ペア:

[(1, 20730871), (7, 2961553), (17, 1219463), (41, 505631), (49, 423079), (119, 174209), (287, 72233), (607, 34153), (697, 29743), (833, 24887), (2009, 10319), (4249, 4879)]