20287869

素因数分解:

$3^1\times 7^1\times {\mathrm{127}}^1\times {\mathrm{7607}}^1$

素因数の和:7744

約数の個数: 16

約数和(自身を含む): 31162368

約数和(自身を除く): 10874499

約数列:

[1, 3, 7, 21, 127, 381, 889, 2667, 7607, 22821, 53249, 159747, 966089, 2898267, 6762623, 20287869]

約数ペア:

[(1, 20287869), (3, 6762623), (7, 2898267), (21, 966089), (127, 159747), (381, 53249), (889, 22821), (2667, 7607)]