21228263

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{193}}^1\times {\mathrm{827}}^1$

素因数の和:1046

約数の個数: 16

約数和(自身を含む): 25701120

約数和(自身を除く): 4472857

約数列:

[1, 7, 19, 133, 193, 827, 1351, 3667, 5789, 15713, 25669, 109991, 159611, 1117277, 3032609, 21228263]

約数ペア:

[(1, 21228263), (7, 3032609), (19, 1117277), (133, 159611), (193, 109991), (827, 25669), (1351, 15713), (3667, 5789)]