19539988

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{613}}^2$

素因数の和:1243

約数の個数: 18

約数和(自身を含む): 36885534

約数和(自身を除く): 17345546

約数列:

[1, 2, 4, 13, 26, 52, 613, 1226, 2452, 7969, 15938, 31876, 375769, 751538, 1503076, 4884997, 9769994, 19539988]

約数ペア:

[(1, 19539988), (2, 9769994), (4, 4884997), (13, 1503076), (26, 751538), (52, 375769), (613, 31876), (1226, 15938), (2452, 7969)]