21271564

素因数分解:

$2^2\times {\mathrm{19}}^2\times {\mathrm{14731}}^1$

素因数の和:14773

約数の個数: 18

約数和(自身を含む): 39290244

約数和(自身を除く): 18018680

約数列:

[1, 2, 4, 19, 38, 76, 361, 722, 1444, 14731, 29462, 58924, 279889, 559778, 1119556, 5317891, 10635782, 21271564]

約数ペア:

[(1, 21271564), (2, 10635782), (4, 5317891), (19, 1119556), (38, 559778), (76, 279889), (361, 58924), (722, 29462), (1444, 14731)]