20880451557

素因数分解:

$3^2\times 7^1\times {\mathrm{71}}^1\times {\mathrm{4668109}}^1$

素因数の和:4668193

約数の個数: 24

約数和(自身を含む): 34954807680

約数和(自身を除く): 14074356123

約数列:

[1, 3, 7, 9, 21, 63, 71, 213, 497, 639, 1491, 4473, 4668109, 14004327, 32676763, 42012981, 98030289, 294090867, 331435739, 994307217, 2320050173, 2982921651, 6960150519, 20880451557]

約数ペア:

[(1, 20880451557), (3, 6960150519), (7, 2982921651), (9, 2320050173), (21, 994307217), (63, 331435739), (71, 294090867), (213, 98030289), (497, 42012981), (639, 32676763), (1491, 14004327), (4473, 4668109)]