20772895

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{1709}}^1$

素因数の和:1755

約数の個数: 32

約数和(自身を含む): 31026240

約数和(自身を除く): 10253345

約数列:

[1, 5, 11, 13, 17, 55, 65, 85, 143, 187, 221, 715, 935, 1105, 1709, 2431, 8545, 12155, 18799, 22217, 29053, 93995, 111085, 145265, 244387, 319583, 377689, 1221935, 1597915, 1888445, 4154579, 20772895]

約数ペア:

[(1, 20772895), (5, 4154579), (11, 1888445), (13, 1597915), (17, 1221935), (55, 377689), (65, 319583), (85, 244387), (143, 145265), (187, 111085), (221, 93995), (715, 29053), (935, 22217), (1105, 18799), (1709, 12155), (2431, 8545)]