19278215

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{409}}^1\times {\mathrm{857}}^1$

素因数の和:1282

約数の個数: 16

約数和(自身を含む): 25328160

約数和(自身を除く): 6049945

約数列:

[1, 5, 11, 55, 409, 857, 2045, 4285, 4499, 9427, 22495, 47135, 350513, 1752565, 3855643, 19278215]

約数ペア:

[(1, 19278215), (5, 3855643), (11, 1752565), (55, 350513), (409, 47135), (857, 22495), (2045, 9427), (4285, 4499)]