21067215

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{108037}}^1$

素因数の和:108058

約数の個数: 16

約数和(自身を含む): 36300768

約数和(自身を除く): 15233553

約数列:

[1, 3, 5, 13, 15, 39, 65, 195, 108037, 324111, 540185, 1404481, 1620555, 4213443, 7022405, 21067215]

約数ペア:

[(1, 21067215), (3, 7022405), (5, 4213443), (13, 1620555), (15, 1404481), (39, 540185), (65, 324111), (195, 108037)]