20797609

素因数分解:

$7^2\times {\mathrm{19}}^1\times {\mathrm{89}}^1\times {\mathrm{251}}^1$

素因数の和:373

約数の個数: 24

約数和(自身を含む): 25855200

約数和(自身を除く): 5057591

約数列:

[1, 7, 19, 49, 89, 133, 251, 623, 931, 1691, 1757, 4361, 4769, 11837, 12299, 22339, 33383, 82859, 156373, 233681, 424441, 1094611, 2971087, 20797609]

約数ペア:

[(1, 20797609), (7, 2971087), (19, 1094611), (49, 424441), (89, 233681), (133, 156373), (251, 82859), (623, 33383), (931, 22339), (1691, 12299), (1757, 11837), (4361, 4769)]