61821991

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{42257}}^1$

素因数の和:42294

約数の個数: 16

約数和(自身を含む): 81135360

約数和(自身を除く): 19313369

約数列:

[1, 7, 11, 19, 77, 133, 209, 1463, 42257, 295799, 464827, 802883, 3253789, 5620181, 8831713, 61821991]

約数ペア:

[(1, 61821991), (7, 8831713), (11, 5620181), (19, 3253789), (77, 802883), (133, 464827), (209, 295799), (1463, 42257)]