51997712

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{249989}}^1$

素因数の和:250010

約数の個数: 20

約数和(自身を含む): 108495660

約数和(自身を除く): 56497948

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 249989, 499978, 999956, 1999912, 3249857, 3999824, 6499714, 12999428, 25998856, 51997712]

約数ペア:

[(1, 51997712), (2, 25998856), (4, 12999428), (8, 6499714), (13, 3999824), (16, 3249857), (26, 1999912), (52, 999956), (104, 499978), (208, 249989)]