81196336

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{390367}}^1$

素因数の和:390388

約数の個数: 20

約数和(自身を含む): 169419712

約数和(自身を除く): 88223376

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 390367, 780734, 1561468, 3122936, 5074771, 6245872, 10149542, 20299084, 40598168, 81196336]

約数ペア:

[(1, 81196336), (2, 40598168), (4, 20299084), (8, 10149542), (13, 6245872), (16, 5074771), (26, 3122936), (52, 1561468), (104, 780734), (208, 390367)]