21967967721

素因数分解:

$3^1\times 7^1\times {\mathrm{53}}^1\times {\mathrm{19737617}}^1$

素因数の和:19737680

約数の個数: 16

約数和(自身を含む): 34106603904

約数和(自身を除く): 12138636183

約数列:

[1, 3, 7, 21, 53, 159, 371, 1113, 19737617, 59212851, 138163319, 414489957, 1046093701, 3138281103, 7322655907, 21967967721]

約数ペア:

[(1, 21967967721), (3, 7322655907), (7, 3138281103), (21, 1046093701), (53, 414489957), (159, 138163319), (371, 59212851), (1113, 19737617)]