21264425

素因数分解:

$5^2\times 7^1\times {\mathrm{13}}^2\times {\mathrm{719}}^1$

素因数の和:762

約数の個数: 36

約数和(自身を含む): 32676480

約数和(自身を除く): 11412055

約数列:

[1, 5, 7, 13, 25, 35, 65, 91, 169, 175, 325, 455, 719, 845, 1183, 2275, 3595, 4225, 5033, 5915, 9347, 17975, 25165, 29575, 46735, 65429, 121511, 125825, 233675, 327145, 607555, 850577, 1635725, 3037775, 4252885, 21264425]

約数ペア:

[(1, 21264425), (5, 4252885), (7, 3037775), (13, 1635725), (25, 850577), (35, 607555), (65, 327145), (91, 233675), (169, 125825), (175, 121511), (325, 65429), (455, 46735), (719, 29575), (845, 25165), (1183, 17975), (2275, 9347), (3595, 5915), (4225, 5033)]