19993955

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{71}}^1\times {\mathrm{3313}}^1$

素因数の和:3406

約数の個数: 16

約数和(自身を含む): 25769664

約数和(自身を除く): 5775709

約数列:

[1, 5, 17, 71, 85, 355, 1207, 3313, 6035, 16565, 56321, 235223, 281605, 1176115, 3998791, 19993955]

約数ペア:

[(1, 19993955), (5, 3998791), (17, 1176115), (71, 281605), (85, 235223), (355, 56321), (1207, 16565), (3313, 6035)]