67921721

素因数分解:

$7^1\times {\mathrm{47}}^1\times {\mathrm{431}}^1\times {\mathrm{479}}^1$

素因数の和:964

約数の個数: 16

約数和(自身を含む): 79626240

約数和(自身を除く): 11704519

約数列:

[1, 7, 47, 329, 431, 479, 3017, 3353, 20257, 22513, 141799, 157591, 206449, 1445143, 9703103, 67921721]

約数ペア:

[(1, 67921721), (7, 9703103), (47, 1445143), (329, 206449), (431, 157591), (479, 141799), (3017, 22513), (3353, 20257)]