20051421

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{7043}}^1$

素因数の和:7132

約数の個数: 16

約数和(自身を含む): 29190336

約数和(自身を除く): 9138915

約数列:

[1, 3, 13, 39, 73, 219, 949, 2847, 7043, 21129, 91559, 274677, 514139, 1542417, 6683807, 20051421]

約数ペア:

[(1, 20051421), (3, 6683807), (13, 1542417), (39, 514139), (73, 274677), (219, 91559), (949, 21129), (2847, 7043)]