19719987

素因数分解:

$3^1\times 7^1\times {\mathrm{331}}^1\times {\mathrm{2837}}^1$

素因数の和:3178

約数の個数: 16

約数和(自身を含む): 30150912

約数和(自身を除く): 10430925

約数列:

[1, 3, 7, 21, 331, 993, 2317, 2837, 6951, 8511, 19859, 59577, 939047, 2817141, 6573329, 19719987]

約数ペア:

[(1, 19719987), (3, 6573329), (7, 2817141), (21, 939047), (331, 59577), (993, 19859), (2317, 8511), (2837, 6951)]