21019281

素因数分解:

$3^1\times {\mathrm{59}}^1\times {\mathrm{149}}^1\times {\mathrm{797}}^1$

素因数の和:1008

約数の個数: 16

約数和(自身を含む): 28728000

約数和(自身を除く): 7708719

約数列:

[1, 3, 59, 149, 177, 447, 797, 2391, 8791, 26373, 47023, 118753, 141069, 356259, 7006427, 21019281]

約数ペア:

[(1, 21019281), (3, 7006427), (59, 356259), (149, 141069), (177, 118753), (447, 47023), (797, 26373), (2391, 8791)]