640702868

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{724777}}^1$

素因数の和:724811

約数の個数: 24

約数和(自身を含む): 1278508392

約数和(自身を除く): 637805524

約数列:

[1, 2, 4, 13, 17, 26, 34, 52, 68, 221, 442, 884, 724777, 1449554, 2899108, 9422101, 12321209, 18844202, 24642418, 37688404, 49284836, 160175717, 320351434, 640702868]

約数ペア:

[(1, 640702868), (2, 320351434), (4, 160175717), (13, 49284836), (17, 37688404), (26, 24642418), (34, 18844202), (52, 12321209), (68, 9422101), (221, 2899108), (442, 1449554), (884, 724777)]