20905795

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{337}}^1\times {\mathrm{653}}^1$

素因数の和:1014

約数の個数: 16

約数和(自身を含む): 26526240

約数和(自身を除く): 5620445

約数列:

[1, 5, 19, 95, 337, 653, 1685, 3265, 6403, 12407, 32015, 62035, 220061, 1100305, 4181159, 20905795]

約数ペア:

[(1, 20905795), (5, 4181159), (19, 1100305), (95, 220061), (337, 62035), (653, 32015), (1685, 12407), (3265, 6403)]