81909776

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{393797}}^1$

素因数の和:393818

約数の個数: 20

約数和(自身を含む): 170908332

約数和(自身を除く): 88998556

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 393797, 787594, 1575188, 3150376, 5119361, 6300752, 10238722, 20477444, 40954888, 81909776]

約数ペア:

[(1, 81909776), (2, 40954888), (4, 20477444), (8, 10238722), (13, 6300752), (16, 5119361), (26, 3150376), (52, 1575188), (104, 787594), (208, 393797)]