21070839

素因数分解:

$3^1\times {\mathrm{53}}^1\times {\mathrm{89}}^1\times {\mathrm{1489}}^1$

素因数の和:1634

約数の個数: 16

約数和(自身を含む): 28965600

約数和(自身を除く): 7894761

約数列:

[1, 3, 53, 89, 159, 267, 1489, 4467, 4717, 14151, 78917, 132521, 236751, 397563, 7023613, 21070839]

約数ペア:

[(1, 21070839), (3, 7023613), (53, 397563), (89, 236751), (159, 132521), (267, 78917), (1489, 14151), (4467, 4717)]