21712444

素因数分解:

$2^2\times {\mathrm{13}}^2\times {\mathrm{32119}}^1$

素因数の和:32149

約数の個数: 18

約数和(自身を含む): 41145720

約数和(自身を除く): 19433276

約数列:

[1, 2, 4, 13, 26, 52, 169, 338, 676, 32119, 64238, 128476, 417547, 835094, 1670188, 5428111, 10856222, 21712444]

約数ペア:

[(1, 21712444), (2, 10856222), (4, 5428111), (13, 1670188), (26, 835094), (52, 417547), (169, 128476), (338, 64238), (676, 32119)]