81637712

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{392489}}^1$

素因数の和:392510

約数の個数: 20

約数和(自身を含む): 170340660

約数和(自身を除く): 88702948

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 392489, 784978, 1569956, 3139912, 5102357, 6279824, 10204714, 20409428, 40818856, 81637712]

約数ペア:

[(1, 81637712), (2, 40818856), (4, 20409428), (8, 10204714), (13, 6279824), (16, 5102357), (26, 3139912), (52, 1569956), (104, 784978), (208, 392489)]