51181000

素因数分解:

$2^3\times 5^3\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{127}}^1$

素因数の和:192

約数の個数: 128

約数和(自身を含む): 134184960

約数和(自身を除く): 83003960

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 25, 26, 31, 40, 50, 52, 62, 65, 100, 104, 124, 125, 127, 130, 155, 200, 248, 250, 254, 260, 310, 325, 403, 500, 508, 520, 620, 635, 650, 775, 806, 1000, 1016, 1240, 1270, 1300, 1550, 1612, 1625, 1651, 2015, 2540, 2600, 3100, 3175, 3224, 3250, 3302, 3875, 3937, 4030, 5080, 6200, 6350, 6500, 6604, 7750, 7874, 8060, 8255, 10075, 12700, 13000, 13208, 15500, 15748, 15875, 16120, 16510, 19685, 20150, 25400, 31000, 31496, 31750, 33020, 39370, 40300, 41275, 50375, 51181, 63500, 66040, 78740, 80600, 82550, 98425, 100750, 102362, 127000, 157480, 165100, 196850, 201500, 204724, 206375, 255905, 330200, 393700, 403000, 409448, 412750, 492125, 511810, 787400, 825500, 984250, 1023620, 1279525, 1651000, 1968500, 2047240, 2559050, 3937000, 5118100, 6397625, 10236200, 12795250, 25590500, 51181000]

約数ペア:

[(1, 51181000), (2, 25590500), (4, 12795250), (5, 10236200), (8, 6397625), (10, 5118100), (13, 3937000), (20, 2559050), (25, 2047240), (26, 1968500), (31, 1651000), (40, 1279525), (50, 1023620), (52, 984250), (62, 825500), (65, 787400), (100, 511810), (104, 492125), (124, 412750), (125, 409448), (127, 403000), (130, 393700), (155, 330200), (200, 255905), (248, 206375), (250, 204724), (254, 201500), (260, 196850), (310, 165100), (325, 157480), (403, 127000), (500, 102362), (508, 100750), (520, 98425), (620, 82550), (635, 80600), (650, 78740), (775, 66040), (806, 63500), (1000, 51181), (1016, 50375), (1240, 41275), (1270, 40300), (1300, 39370), (1550, 33020), (1612, 31750), (1625, 31496), (1651, 31000), (2015, 25400), (2540, 20150), (2600, 19685), (3100, 16510), (3175, 16120), (3224, 15875), (3250, 15748), (3302, 15500), (3875, 13208), (3937, 13000), (4030, 12700), (5080, 10075), (6200, 8255), (6350, 8060), (6500, 7874), (6604, 7750)]