20531147

素因数分解:

$7^2\times {\mathrm{13}}^1\times {\mathrm{167}}^1\times {\mathrm{193}}^1$

素因数の和:387

約数の個数: 24

約数和(自身を含む): 26008416

約数和(自身を除く): 5477269

約数列:

[1, 7, 13, 49, 91, 167, 193, 637, 1169, 1351, 2171, 2509, 8183, 9457, 15197, 17563, 32231, 106379, 122941, 225617, 419003, 1579319, 2933021, 20531147]

約数ペア:

[(1, 20531147), (7, 2933021), (13, 1579319), (49, 419003), (91, 225617), (167, 122941), (193, 106379), (637, 32231), (1169, 17563), (1351, 15197), (2171, 9457), (2509, 8183)]