20189961

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{109}}^1\times {\mathrm{1871}}^1$

素因数の和:1997

約数の個数: 24

約数和(自身を含む): 32123520

約数和(自身を除く): 11933559

約数列:

[1, 3, 9, 11, 33, 99, 109, 327, 981, 1199, 1871, 3597, 5613, 10791, 16839, 20581, 61743, 185229, 203939, 611817, 1835451, 2243329, 6729987, 20189961]

約数ペア:

[(1, 20189961), (3, 6729987), (9, 2243329), (11, 1835451), (33, 611817), (99, 203939), (109, 185229), (327, 61743), (981, 20581), (1199, 16839), (1871, 10791), (3597, 5613)]