20820537

素因数分解:

$3^3\times {\mathrm{71}}^1\times {\mathrm{10861}}^1$

素因数の和:10941

約数の個数: 16

約数和(自身を含む): 31282560

約数和(自身を除く): 10462023

約数列:

[1, 3, 9, 27, 71, 213, 639, 1917, 10861, 32583, 97749, 293247, 771131, 2313393, 6940179, 20820537]

約数ペア:

[(1, 20820537), (3, 6940179), (9, 2313393), (27, 771131), (71, 293247), (213, 97749), (639, 32583), (1917, 10861)]