20421981

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{127}}^1\times {\mathrm{1051}}^1$

素因数の和:1201

約数の個数: 24

約数和(自身を含む): 31509504

約数和(自身を除く): 11087523

約数列:

[1, 3, 9, 17, 51, 127, 153, 381, 1051, 1143, 2159, 3153, 6477, 9459, 17867, 19431, 53601, 133477, 160803, 400431, 1201293, 2269109, 6807327, 20421981]

約数ペア:

[(1, 20421981), (3, 6807327), (9, 2269109), (17, 1201293), (51, 400431), (127, 160803), (153, 133477), (381, 53601), (1051, 19431), (1143, 17867), (2159, 9459), (3153, 6477)]