639574

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{1447}}^1$

素因数の和:1479

約数の個数: 16

約数和(自身を含む): 1094688

約数和(自身を除く): 455114

約数列:

[1, 2, 13, 17, 26, 34, 221, 442, 1447, 2894, 18811, 24599, 37622, 49198, 319787, 639574]

約数ペア:

[(1, 639574), (2, 319787), (13, 49198), (17, 37622), (26, 24599), (34, 18811), (221, 2894), (442, 1447)]