21870628

素因数分解:

$2^2\times {\mathrm{13}}^2\times {\mathrm{32353}}^1$

素因数の和:32383

約数の個数: 18

約数和(自身を含む): 41445474

約数和(自身を除く): 19574846

約数列:

[1, 2, 4, 13, 26, 52, 169, 338, 676, 32353, 64706, 129412, 420589, 841178, 1682356, 5467657, 10935314, 21870628]

約数ペア:

[(1, 21870628), (2, 10935314), (4, 5467657), (13, 1682356), (26, 841178), (52, 420589), (169, 129412), (338, 64706), (676, 32353)]