77980480

素因数分解:

$2^6\times 5^1\times {\mathrm{197}}^1\times {\mathrm{1237}}^1$

素因数の和:1451

約数の個数: 56

約数和(自身を含む): 186784488

約数和(自身を除く): 108804008

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 197, 320, 394, 788, 985, 1237, 1576, 1970, 2474, 3152, 3940, 4948, 6185, 6304, 7880, 9896, 12370, 12608, 15760, 19792, 24740, 31520, 39584, 49480, 63040, 79168, 98960, 197920, 243689, 395840, 487378, 974756, 1218445, 1949512, 2436890, 3899024, 4873780, 7798048, 9747560, 15596096, 19495120, 38990240, 77980480]

約数ペア:

[(1, 77980480), (2, 38990240), (4, 19495120), (5, 15596096), (8, 9747560), (10, 7798048), (16, 4873780), (20, 3899024), (32, 2436890), (40, 1949512), (64, 1218445), (80, 974756), (160, 487378), (197, 395840), (320, 243689), (394, 197920), (788, 98960), (985, 79168), (1237, 63040), (1576, 49480), (1970, 39584), (2474, 31520), (3152, 24740), (3940, 19792), (4948, 15760), (6185, 12608), (6304, 12370), (7880, 9896)]