1280495500

素因数分解:

$2^2\times 5^3\times {\mathrm{19}}^1\times {\mathrm{134789}}^1$

素因数の和:134827

約数の個数: 48

約数和(自身を含む): 2943813600

約数和(自身を除く): 1663318100

約数列:

[1, 2, 4, 5, 10, 19, 20, 25, 38, 50, 76, 95, 100, 125, 190, 250, 380, 475, 500, 950, 1900, 2375, 4750, 9500, 134789, 269578, 539156, 673945, 1347890, 2560991, 2695780, 3369725, 5121982, 6739450, 10243964, 12804955, 13478900, 16848625, 25609910, 33697250, 51219820, 64024775, 67394500, 128049550, 256099100, 320123875, 640247750, 1280495500]

約数ペア:

[(1, 1280495500), (2, 640247750), (4, 320123875), (5, 256099100), (10, 128049550), (19, 67394500), (20, 64024775), (25, 51219820), (38, 33697250), (50, 25609910), (76, 16848625), (95, 13478900), (100, 12804955), (125, 10243964), (190, 6739450), (250, 5121982), (380, 3369725), (475, 2695780), (500, 2560991), (950, 1347890), (1900, 673945), (2375, 539156), (4750, 269578), (9500, 134789)]