77978000

素因数分解:

$2^4\times 5^3\times {\mathrm{127}}^1\times {\mathrm{307}}^1$

素因数の和:457

約数の個数: 80

約数和(自身を含む): 190654464

約数和(自身を除く): 112676464

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 125, 127, 200, 250, 254, 307, 400, 500, 508, 614, 635, 1000, 1016, 1228, 1270, 1535, 2000, 2032, 2456, 2540, 3070, 3175, 4912, 5080, 6140, 6350, 7675, 10160, 12280, 12700, 15350, 15875, 24560, 25400, 30700, 31750, 38375, 38989, 50800, 61400, 63500, 76750, 77978, 122800, 127000, 153500, 155956, 194945, 254000, 307000, 311912, 389890, 614000, 623824, 779780, 974725, 1559560, 1949450, 3119120, 3898900, 4873625, 7797800, 9747250, 15595600, 19494500, 38989000, 77978000]

約数ペア:

[(1, 77978000), (2, 38989000), (4, 19494500), (5, 15595600), (8, 9747250), (10, 7797800), (16, 4873625), (20, 3898900), (25, 3119120), (40, 1949450), (50, 1559560), (80, 974725), (100, 779780), (125, 623824), (127, 614000), (200, 389890), (250, 311912), (254, 307000), (307, 254000), (400, 194945), (500, 155956), (508, 153500), (614, 127000), (635, 122800), (1000, 77978), (1016, 76750), (1228, 63500), (1270, 61400), (1535, 50800), (2000, 38989), (2032, 38375), (2456, 31750), (2540, 30700), (3070, 25400), (3175, 24560), (4912, 15875), (5080, 15350), (6140, 12700), (6350, 12280), (7675, 10160)]