161981872

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{778759}}^1$

素因数の和:778780

約数の個数: 20

約数和(自身を含む): 337981840

約数和(自身を除く): 175999968

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 778759, 1557518, 3115036, 6230072, 10123867, 12460144, 20247734, 40495468, 80990936, 161981872]

約数ペア:

[(1, 161981872), (2, 80990936), (4, 40495468), (8, 20247734), (13, 12460144), (16, 10123867), (26, 6230072), (52, 3115036), (104, 1557518), (208, 778759)]