21964817

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{239}}^1\times {\mathrm{691}}^1$

素因数の和:956

約数の個数: 16

約数和(自身を含む): 26572800

約数和(自身を除く): 4607983

約数列:

[1, 7, 19, 133, 239, 691, 1673, 4541, 4837, 13129, 31787, 91903, 165149, 1156043, 3137831, 21964817]

約数ペア:

[(1, 21964817), (7, 3137831), (19, 1156043), (133, 165149), (239, 91903), (691, 31787), (1673, 13129), (4541, 4837)]