20814919

素因数分解:

${\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{127}}^1\times {\mathrm{311}}^1$

素因数の和:486

約数の個数: 16

約数和(自身を含む): 23003136

約数和(自身を除く): 2188217

約数列:

[1, 17, 31, 127, 311, 527, 2159, 3937, 5287, 9641, 39497, 66929, 163897, 671449, 1224407, 20814919]

約数ペア:

[(1, 20814919), (17, 1224407), (31, 671449), (127, 163897), (311, 66929), (527, 39497), (2159, 9641), (3937, 5287)]