21080899

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{5113}}^1$

素因数の和:5170

約数の個数: 16

約数和(自身を含む): 26183680

約数和(自身を除く): 5102781

約数列:

[1, 7, 19, 31, 133, 217, 589, 4123, 5113, 35791, 97147, 158503, 680029, 1109521, 3011557, 21080899]

約数ペア:

[(1, 21080899), (7, 3011557), (19, 1109521), (31, 680029), (133, 158503), (217, 97147), (589, 35791), (4123, 5113)]