21779805

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{85411}}^1$

素因数の和:85436

約数の個数: 16

約数和(自身を含む): 36897984

約数和(自身を除く): 15118179

約数列:

[1, 3, 5, 15, 17, 51, 85, 255, 85411, 256233, 427055, 1281165, 1451987, 4355961, 7259935, 21779805]

約数ペア:

[(1, 21779805), (3, 7259935), (5, 4355961), (15, 1451987), (17, 1281165), (51, 427055), (85, 256233), (255, 85411)]