643643

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{643}}^1$

素因数の和:674

約数の個数: 16

約数和(自身を含む): 865536

約数和(自身を除く): 221893

約数列:

[1, 7, 11, 13, 77, 91, 143, 643, 1001, 4501, 7073, 8359, 49511, 58513, 91949, 643643]

約数ペア:

[(1, 643643), (7, 91949), (11, 58513), (13, 49511), (77, 8359), (91, 7073), (143, 4501), (643, 1001)]