205319985

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{151}}^1\times {\mathrm{367}}^1$

素因数の和:558

約数の個数: 64

約数和(自身を含む): 375889920

約数和(自身を除く): 170569935

約数列:

[1, 3, 5, 13, 15, 19, 39, 57, 65, 95, 151, 195, 247, 285, 367, 453, 741, 755, 1101, 1235, 1835, 1963, 2265, 2869, 3705, 4771, 5505, 5889, 6973, 8607, 9815, 14313, 14345, 20919, 23855, 29445, 34865, 37297, 43035, 55417, 71565, 90649, 104595, 111891, 166251, 186485, 271947, 277085, 453245, 559455, 720421, 831255, 1052923, 1359735, 2161263, 3158769, 3602105, 5264615, 10806315, 13687999, 15793845, 41063997, 68439995, 205319985]

約数ペア:

[(1, 205319985), (3, 68439995), (5, 41063997), (13, 15793845), (15, 13687999), (19, 10806315), (39, 5264615), (57, 3602105), (65, 3158769), (95, 2161263), (151, 1359735), (195, 1052923), (247, 831255), (285, 720421), (367, 559455), (453, 453245), (741, 277085), (755, 271947), (1101, 186485), (1235, 166251), (1835, 111891), (1963, 104595), (2265, 90649), (2869, 71565), (3705, 55417), (4771, 43035), (5505, 37297), (5889, 34865), (6973, 29445), (8607, 23855), (9815, 20919), (14313, 14345)]