19918245

素因数分解:

$3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{30881}}^1$

素因数の和:30932

約数の個数: 16

約数和(自身を含む): 32611392

約数和(自身を除く): 12693147

約数列:

[1, 3, 5, 15, 43, 129, 215, 645, 30881, 92643, 154405, 463215, 1327883, 3983649, 6639415, 19918245]

約数ペア:

[(1, 19918245), (3, 6639415), (5, 3983649), (15, 1327883), (43, 463215), (129, 154405), (215, 92643), (645, 30881)]