28704988

素因数分解:

$2^2\times {\mathrm{13}}^2\times {\mathrm{42463}}^1$

素因数の和:42493

約数の個数: 18

約数和(自身を含む): 54396384

約数和(自身を除く): 25691396

約数列:

[1, 2, 4, 13, 26, 52, 169, 338, 676, 42463, 84926, 169852, 552019, 1104038, 2208076, 7176247, 14352494, 28704988]

約数ペア:

[(1, 28704988), (2, 14352494), (4, 7176247), (13, 2208076), (26, 1104038), (52, 552019), (169, 169852), (338, 84926), (676, 42463)]