81901760

素因数分解:

$2^6\times 5^1\times {\mathrm{211}}^1\times {\mathrm{1213}}^1$

素因数の和:1441

約数の個数: 56

約数和(自身を含む): 196114416

約数和(自身を除く): 114212656

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 211, 320, 422, 844, 1055, 1213, 1688, 2110, 2426, 3376, 4220, 4852, 6065, 6752, 8440, 9704, 12130, 13504, 16880, 19408, 24260, 33760, 38816, 48520, 67520, 77632, 97040, 194080, 255943, 388160, 511886, 1023772, 1279715, 2047544, 2559430, 4095088, 5118860, 8190176, 10237720, 16380352, 20475440, 40950880, 81901760]

約数ペア:

[(1, 81901760), (2, 40950880), (4, 20475440), (5, 16380352), (8, 10237720), (10, 8190176), (16, 5118860), (20, 4095088), (32, 2559430), (40, 2047544), (64, 1279715), (80, 1023772), (160, 511886), (211, 388160), (320, 255943), (422, 194080), (844, 97040), (1055, 77632), (1213, 67520), (1688, 48520), (2110, 38816), (2426, 33760), (3376, 24260), (4220, 19408), (4852, 16880), (6065, 13504), (6752, 12130), (8440, 9704)]