21789019

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{283}}^1\times {\mathrm{647}}^1$

素因数の和:954

約数の個数: 16

約数和(自身を含む): 26500608

約数和(自身を除く): 4711589

約数列:

[1, 7, 17, 119, 283, 647, 1981, 4529, 4811, 10999, 33677, 76993, 183101, 1281707, 3112717, 21789019]

約数ペア:

[(1, 21789019), (7, 3112717), (17, 1281707), (119, 183101), (283, 76993), (647, 33677), (1981, 10999), (4529, 4811)]