81738447

素因数分解:

$3^1\times 7^1\times {\mathrm{137}}^1\times {\mathrm{28411}}^1$

素因数の和:28558

約数の個数: 16

約数和(自身を含む): 125467392

約数和(自身を除く): 43728945

約数列:

[1, 3, 7, 21, 137, 411, 959, 2877, 28411, 85233, 198877, 596631, 3892307, 11676921, 27246149, 81738447]

約数ペア:

[(1, 81738447), (3, 27246149), (7, 11676921), (21, 3892307), (137, 596631), (411, 198877), (959, 85233), (2877, 28411)]