21087105

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{108139}}^1$

素因数の和:108160

約数の個数: 16

約数和(自身を含む): 36335040

約数和(自身を除く): 15247935

約数列:

[1, 3, 5, 13, 15, 39, 65, 195, 108139, 324417, 540695, 1405807, 1622085, 4217421, 7029035, 21087105]

約数ペア:

[(1, 21087105), (3, 7029035), (5, 4217421), (13, 1622085), (15, 1405807), (39, 540695), (65, 324417), (195, 108139)]