209905436

素因数分解:

$2^2\times {\mathrm{13}}^2\times {\mathrm{310511}}^1$

素因数の和:310541

約数の個数: 18

約数和(自身を含む): 397765872

約数和(自身を除く): 187860436

約数列:

[1, 2, 4, 13, 26, 52, 169, 338, 676, 310511, 621022, 1242044, 4036643, 8073286, 16146572, 52476359, 104952718, 209905436]

約数ペア:

[(1, 209905436), (2, 104952718), (4, 52476359), (13, 16146572), (26, 8073286), (52, 4036643), (169, 1242044), (338, 621022), (676, 310511)]