26989000

素因数分解:

$2^3\times 5^3\times {\mathrm{137}}^1\times {\mathrm{197}}^1$

素因数の和:355

約数の個数: 64

約数和(自身を含む): 63938160

約数和(自身を除く): 36949160

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 125, 137, 197, 200, 250, 274, 394, 500, 548, 685, 788, 985, 1000, 1096, 1370, 1576, 1970, 2740, 3425, 3940, 4925, 5480, 6850, 7880, 9850, 13700, 17125, 19700, 24625, 26989, 27400, 34250, 39400, 49250, 53978, 68500, 98500, 107956, 134945, 137000, 197000, 215912, 269890, 539780, 674725, 1079560, 1349450, 2698900, 3373625, 5397800, 6747250, 13494500, 26989000]

約数ペア:

[(1, 26989000), (2, 13494500), (4, 6747250), (5, 5397800), (8, 3373625), (10, 2698900), (20, 1349450), (25, 1079560), (40, 674725), (50, 539780), (100, 269890), (125, 215912), (137, 197000), (197, 137000), (200, 134945), (250, 107956), (274, 98500), (394, 68500), (500, 53978), (548, 49250), (685, 39400), (788, 34250), (985, 27400), (1000, 26989), (1096, 24625), (1370, 19700), (1576, 17125), (1970, 13700), (2740, 9850), (3425, 7880), (3940, 6850), (4925, 5480)]