205465240

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{409}}^1\times {\mathrm{661}}^1$

素因数の和:1100

約数の個数: 64

約数和(自身を含む): 488556000

約数和(自身を除く): 283090760

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 152, 190, 380, 409, 661, 760, 818, 1322, 1636, 2045, 2644, 3272, 3305, 4090, 5288, 6610, 7771, 8180, 12559, 13220, 15542, 16360, 25118, 26440, 31084, 38855, 50236, 62168, 62795, 77710, 100472, 125590, 155420, 251180, 270349, 310840, 502360, 540698, 1081396, 1351745, 2162792, 2703490, 5136631, 5406980, 10273262, 10813960, 20546524, 25683155, 41093048, 51366310, 102732620, 205465240]

約数ペア:

[(1, 205465240), (2, 102732620), (4, 51366310), (5, 41093048), (8, 25683155), (10, 20546524), (19, 10813960), (20, 10273262), (38, 5406980), (40, 5136631), (76, 2703490), (95, 2162792), (152, 1351745), (190, 1081396), (380, 540698), (409, 502360), (661, 310840), (760, 270349), (818, 251180), (1322, 155420), (1636, 125590), (2045, 100472), (2644, 77710), (3272, 62795), (3305, 62168), (4090, 50236), (5288, 38855), (6610, 31084), (7771, 26440), (8180, 25118), (12559, 16360), (13220, 15542)]