81521890

素因数分解:

$2^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{354443}}^1$

素因数の和:354473

約数の個数: 16

約数和(自身を含む): 153119808

約数和(自身を除く): 71597918

約数列:

[1, 2, 5, 10, 23, 46, 115, 230, 354443, 708886, 1772215, 3544430, 8152189, 16304378, 40760945, 81521890]

約数ペア:

[(1, 81521890), (2, 40760945), (5, 16304378), (10, 8152189), (23, 3544430), (46, 1772215), (115, 708886), (230, 354443)]