1991231139

素因数分解:

$3^1\times {\mathrm{71}}^1\times {\mathrm{647}}^1\times {\mathrm{14449}}^1$

素因数の和:15170

約数の個数: 16

約数和(自身を含む): 2696716800

約数和(自身を除く): 705485661

約数列:

[1, 3, 71, 213, 647, 1941, 14449, 43347, 45937, 137811, 1025879, 3077637, 9348503, 28045509, 663743713, 1991231139]

約数ペア:

[(1, 1991231139), (3, 663743713), (71, 28045509), (213, 9348503), (647, 3077637), (1941, 1025879), (14449, 137811), (43347, 45937)]