81391076

素因数分解:

$2^2\times {\mathrm{13}}^2\times {\mathrm{120401}}^1$

素因数の和:120431

約数の個数: 18

約数和(自身を含む): 154234962

約数和(自身を除く): 72843886

約数列:

[1, 2, 4, 13, 26, 52, 169, 338, 676, 120401, 240802, 481604, 1565213, 3130426, 6260852, 20347769, 40695538, 81391076]

約数ペア:

[(1, 81391076), (2, 40695538), (4, 20347769), (13, 6260852), (26, 3130426), (52, 1565213), (169, 481604), (338, 240802), (676, 120401)]