25196409

素因数分解:

$3^2\times 7^1\times {\mathrm{43}}^1\times {\mathrm{71}}^1\times {\mathrm{131}}^1$

素因数の和:258

約数の個数: 48

約数和(自身を含む): 43490304

約数和(自身を除く): 18293895

約数列:

[1, 3, 7, 9, 21, 43, 63, 71, 129, 131, 213, 301, 387, 393, 497, 639, 903, 917, 1179, 1491, 2709, 2751, 3053, 4473, 5633, 8253, 9159, 9301, 16899, 21371, 27477, 27903, 39431, 50697, 64113, 65107, 83709, 118293, 192339, 195321, 354879, 399943, 585963, 1199829, 2799601, 3599487, 8398803, 25196409]

約数ペア:

[(1, 25196409), (3, 8398803), (7, 3599487), (9, 2799601), (21, 1199829), (43, 585963), (63, 399943), (71, 354879), (129, 195321), (131, 192339), (213, 118293), (301, 83709), (387, 65107), (393, 64113), (497, 50697), (639, 39431), (903, 27903), (917, 27477), (1179, 21371), (1491, 16899), (2709, 9301), (2751, 9159), (3053, 8253), (4473, 5633)]