21397117

素因数分解:

$7^1\times {\mathrm{59}}^1\times {\mathrm{103}}^1\times {\mathrm{503}}^1$

素因数の和:672

約数の個数: 16

約数和(自身を含む): 25159680

約数和(自身を除く): 3762563

約数列:

[1, 7, 59, 103, 413, 503, 721, 3521, 6077, 29677, 42539, 51809, 207739, 362663, 3056731, 21397117]

約数ペア:

[(1, 21397117), (7, 3056731), (59, 362663), (103, 207739), (413, 51809), (503, 42539), (721, 29677), (3521, 6077)]