20189876

素因数分解:

$2^2\times 7^1\times {\mathrm{41}}^1\times {\mathrm{43}}^1\times {\mathrm{409}}^1$

素因数の和:504

約数の個数: 48

約数和(自身を含む): 42430080

約数和(自身を除く): 22240204

約数列:

[1, 2, 4, 7, 14, 28, 41, 43, 82, 86, 164, 172, 287, 301, 409, 574, 602, 818, 1148, 1204, 1636, 1763, 2863, 3526, 5726, 7052, 11452, 12341, 16769, 17587, 24682, 33538, 35174, 49364, 67076, 70348, 117383, 123109, 234766, 246218, 469532, 492436, 721067, 1442134, 2884268, 5047469, 10094938, 20189876]

約数ペア:

[(1, 20189876), (2, 10094938), (4, 5047469), (7, 2884268), (14, 1442134), (28, 721067), (41, 492436), (43, 469532), (82, 246218), (86, 234766), (164, 123109), (172, 117383), (287, 70348), (301, 67076), (409, 49364), (574, 35174), (602, 33538), (818, 24682), (1148, 17587), (1204, 16769), (1636, 12341), (1763, 11452), (2863, 7052), (3526, 5726)]