19810089

素因数分解:

$3^5\times {\mathrm{13}}^1\times {\mathrm{6271}}^1$

素因数の和:6299

約数の個数: 24

約数和(自身を含む): 31962112

約数和(自身を除く): 12152023

約数列:

[1, 3, 9, 13, 27, 39, 81, 117, 243, 351, 1053, 3159, 6271, 18813, 56439, 81523, 169317, 244569, 507951, 733707, 1523853, 2201121, 6603363, 19810089]

約数ペア:

[(1, 19810089), (3, 6603363), (9, 2201121), (13, 1523853), (27, 733707), (39, 507951), (81, 244569), (117, 169317), (243, 81523), (351, 56439), (1053, 18813), (3159, 6271)]