21375893

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^2\times {\mathrm{769}}^1$

素因数の和:825

約数の個数: 24

約数和(自身を含む): 28163520

約数和(自身を除く): 6787627

約数列:

[1, 7, 11, 19, 77, 133, 209, 361, 769, 1463, 2527, 3971, 5383, 8459, 14611, 27797, 59213, 102277, 160721, 277609, 1125047, 1943263, 3053699, 21375893]

約数ペア:

[(1, 21375893), (7, 3053699), (11, 1943263), (19, 1125047), (77, 277609), (133, 160721), (209, 102277), (361, 59213), (769, 27797), (1463, 14611), (2527, 8459), (3971, 5383)]