20892575

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{109}}^1$

素因数の和:188

約数の個数: 48

約数和(自身を含む): 30935520

約数和(自身を除く): 10042945

約数列:

[1, 5, 11, 17, 25, 41, 55, 85, 109, 187, 205, 275, 425, 451, 545, 697, 935, 1025, 1199, 1853, 2255, 2725, 3485, 4469, 4675, 5995, 7667, 9265, 11275, 17425, 20383, 22345, 29975, 38335, 46325, 49159, 75973, 101915, 111725, 191675, 245795, 379865, 509575, 835703, 1228975, 1899325, 4178515, 20892575]

約数ペア:

[(1, 20892575), (5, 4178515), (11, 1899325), (17, 1228975), (25, 835703), (41, 509575), (55, 379865), (85, 245795), (109, 191675), (187, 111725), (205, 101915), (275, 75973), (425, 49159), (451, 46325), (545, 38335), (697, 29975), (935, 22345), (1025, 20383), (1199, 17425), (1853, 11275), (2255, 9265), (2725, 7667), (3485, 5995), (4469, 4675)]