21073297

素因数分解:

$7^1\times {\mathrm{71}}^1\times {\mathrm{109}}^1\times {\mathrm{389}}^1$

素因数の和:576

約数の個数: 16

約数和(自身を含む): 24710400

約数和(自身を除く): 3637103

約数列:

[1, 7, 71, 109, 389, 497, 763, 2723, 7739, 27619, 42401, 54173, 193333, 296807, 3010471, 21073297]

約数ペア:

[(1, 21073297), (7, 3010471), (71, 296807), (109, 193333), (389, 54173), (497, 42401), (763, 27619), (2723, 7739)]