20123675

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{433}}^1$

素因数の和:480

約数の個数: 36

約数和(自身を含む): 29544984

約数和(自身を除く): 9421309

約数列:

[1, 5, 11, 13, 25, 55, 65, 143, 169, 275, 325, 433, 715, 845, 1859, 2165, 3575, 4225, 4763, 5629, 9295, 10825, 23815, 28145, 46475, 61919, 73177, 119075, 140725, 309595, 365885, 804947, 1547975, 1829425, 4024735, 20123675]

約数ペア:

[(1, 20123675), (5, 4024735), (11, 1829425), (13, 1547975), (25, 804947), (55, 365885), (65, 309595), (143, 140725), (169, 119075), (275, 73177), (325, 61919), (433, 46475), (715, 28145), (845, 23815), (1859, 10825), (2165, 9295), (3575, 5629), (4225, 4763)]