19970811

素因数分解:

$3^2\times 7^1\times {\mathrm{359}}^1\times {\mathrm{883}}^1$

素因数の和:1255

約数の個数: 24

約数和(自身を含む): 33096960

約数和(自身を除く): 13126149

約数列:

[1, 3, 7, 9, 21, 63, 359, 883, 1077, 2513, 2649, 3231, 6181, 7539, 7947, 18543, 22617, 55629, 316997, 950991, 2218979, 2852973, 6656937, 19970811]

約数ペア:

[(1, 19970811), (3, 6656937), (7, 2852973), (9, 2218979), (21, 950991), (63, 316997), (359, 55629), (883, 22617), (1077, 18543), (2513, 7947), (2649, 7539), (3231, 6181)]