21008319

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{67}}^1\times {\mathrm{5501}}^1$

素因数の和:5590

約数の個数: 16

約数和(自身を含む): 29930880

約数和(自身を除く): 8922561

約数列:

[1, 3, 19, 57, 67, 201, 1273, 3819, 5501, 16503, 104519, 313557, 368567, 1105701, 7002773, 21008319]

約数ペア:

[(1, 21008319), (3, 7002773), (19, 1105701), (57, 368567), (67, 313557), (201, 104519), (1273, 16503), (3819, 5501)]