1991371971

素因数分解:

$3^1\times {\mathrm{29}}^1\times {\mathrm{107}}^1\times {\mathrm{213919}}^1$

素因数の和:214058

約数の個数: 16

約数和(自身を含む): 2772403200

約数和(自身を除く): 781031229

約数列:

[1, 3, 29, 87, 107, 321, 3103, 9309, 213919, 641757, 6203651, 18610953, 22889333, 68667999, 663790657, 1991371971]

約数ペア:

[(1, 1991371971), (3, 663790657), (29, 68667999), (87, 22889333), (107, 18610953), (321, 6203651), (3103, 641757), (9309, 213919)]