20498439

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{53}}^1\times {\mathrm{211}}^1$

素因数の和:327

約数の個数: 32

約数和(自身を含む): 30772224

約数和(自身を除く): 10273785

約数列:

[1, 3, 13, 39, 47, 53, 141, 159, 211, 611, 633, 689, 1833, 2067, 2491, 2743, 7473, 8229, 9917, 11183, 29751, 32383, 33549, 97149, 128921, 145379, 386763, 436137, 525601, 1576803, 6832813, 20498439]

約数ペア:

[(1, 20498439), (3, 6832813), (13, 1576803), (39, 525601), (47, 436137), (53, 386763), (141, 145379), (159, 128921), (211, 97149), (611, 33549), (633, 32383), (689, 29751), (1833, 11183), (2067, 9917), (2491, 8229), (2743, 7473)]