201721971

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{68683}}^1$

素因数の和:68786

約数の個数: 16

約数和(自身を含む): 296714880

約数和(自身を除く): 94992909

約数列:

[1, 3, 11, 33, 89, 267, 979, 2937, 68683, 206049, 755513, 2266539, 6112787, 18338361, 67240657, 201721971]

約数ペア:

[(1, 201721971), (3, 67240657), (11, 18338361), (33, 6112787), (89, 2266539), (267, 755513), (979, 206049), (2937, 68683)]