19911795

素因数分解:

$3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{30871}}^1$

素因数の和:30922

約数の個数: 16

約数和(自身を含む): 32600832

約数和(自身を除く): 12689037

約数列:

[1, 3, 5, 15, 43, 129, 215, 645, 30871, 92613, 154355, 463065, 1327453, 3982359, 6637265, 19911795]

約数ペア:

[(1, 19911795), (3, 6637265), (5, 3982359), (15, 1327453), (43, 463065), (129, 154355), (215, 92613), (645, 30871)]