19979726

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{17}}^2\times {\mathrm{2659}}^1$

素因数の和:2708

約数の個数: 24

約数和(自身を含む): 34298040

約数和(自身を除く): 14318314

約数列:

[1, 2, 13, 17, 26, 34, 221, 289, 442, 578, 2659, 3757, 5318, 7514, 34567, 45203, 69134, 90406, 587639, 768451, 1175278, 1536902, 9989863, 19979726]

約数ペア:

[(1, 19979726), (2, 9989863), (13, 1536902), (17, 1175278), (26, 768451), (34, 587639), (221, 90406), (289, 69134), (442, 45203), (578, 34567), (2659, 7514), (3757, 5318)]