28116140

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{108139}}^1$

素因数の和:108161

約数の個数: 24

約数和(自身を含む): 63586320

約数和(自身を除く): 35470180

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 108139, 216278, 432556, 540695, 1081390, 1405807, 2162780, 2811614, 5623228, 7029035, 14058070, 28116140]

約数ペア:

[(1, 28116140), (2, 14058070), (4, 7029035), (5, 5623228), (10, 2811614), (13, 2162780), (20, 1405807), (26, 1081390), (52, 540695), (65, 432556), (130, 216278), (260, 108139)]