20217998979

素因数分解:

$3^3\times {\mathrm{71}}^1\times {\mathrm{10546687}}^1$

素因数の和:10546767

約数の個数: 16

約数和(自身を含む): 30374461440

約数和(自身を除く): 10156462461

約数列:

[1, 3, 9, 27, 71, 213, 639, 1917, 10546687, 31640061, 94920183, 284760549, 748814777, 2246444331, 6739332993, 20217998979]

約数ペア:

[(1, 20217998979), (3, 6739332993), (9, 2246444331), (27, 748814777), (71, 284760549), (213, 94920183), (639, 31640061), (1917, 10546687)]