19391805

素因数分解:

$3^4\times 5^1\times {\mathrm{47881}}^1$

素因数の和:47898

約数の個数: 20

約数和(自身を含む): 34762332

約数和(自身を除く): 15370527

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 47881, 143643, 239405, 430929, 718215, 1292787, 2154645, 3878361, 6463935, 19391805]

約数ペア:

[(1, 19391805), (3, 6463935), (5, 3878361), (9, 2154645), (15, 1292787), (27, 718215), (45, 430929), (81, 239405), (135, 143643), (405, 47881)]