20958535

素因数分解:

$5^1\times {\mathrm{13}}^2\times {\mathrm{17}}^1\times {\mathrm{1459}}^1$

素因数の和:1507

約数の個数: 24

約数和(自身を含む): 28855440

約数和(自身を除く): 7896905

約数列:

[1, 5, 13, 17, 65, 85, 169, 221, 845, 1105, 1459, 2873, 7295, 14365, 18967, 24803, 94835, 124015, 246571, 322439, 1232855, 1612195, 4191707, 20958535]

約数ペア:

[(1, 20958535), (5, 4191707), (13, 1612195), (17, 1232855), (65, 322439), (85, 246571), (169, 124015), (221, 94835), (845, 24803), (1105, 18967), (1459, 14365), (2873, 7295)]