81871230

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{197}}^1\times {\mathrm{1979}}^1$

素因数の和:2193

約数の個数: 64

約数和(自身を含む): 225815040

約数和(自身を除く): 143943810

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 30, 35, 42, 70, 105, 197, 210, 394, 591, 985, 1182, 1379, 1970, 1979, 2758, 2955, 3958, 4137, 5910, 5937, 6895, 8274, 9895, 11874, 13790, 13853, 19790, 20685, 27706, 29685, 41370, 41559, 59370, 69265, 83118, 138530, 207795, 389863, 415590, 779726, 1169589, 1949315, 2339178, 2729041, 3898630, 5458082, 5847945, 8187123, 11695890, 13645205, 16374246, 27290410, 40935615, 81871230]

約数ペア:

[(1, 81871230), (2, 40935615), (3, 27290410), (5, 16374246), (6, 13645205), (7, 11695890), (10, 8187123), (14, 5847945), (15, 5458082), (21, 3898630), (30, 2729041), (35, 2339178), (42, 1949315), (70, 1169589), (105, 779726), (197, 415590), (210, 389863), (394, 207795), (591, 138530), (985, 83118), (1182, 69265), (1379, 59370), (1970, 41559), (1979, 41370), (2758, 29685), (2955, 27706), (3958, 20685), (4137, 19790), (5910, 13853), (5937, 13790), (6895, 11874), (8274, 9895)]