21065278

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{47659}}^1$

素因数の和:47691

約数の個数: 16

約数和(自身を含む): 36030960

約数和(自身を除く): 14965682

約数列:

[1, 2, 13, 17, 26, 34, 221, 442, 47659, 95318, 619567, 810203, 1239134, 1620406, 10532639, 21065278]

約数ペア:

[(1, 21065278), (2, 10532639), (13, 1620406), (17, 1239134), (26, 810203), (34, 619567), (221, 95318), (442, 47659)]