87198920

素因数分解:

$2^3\times 5^1\times {\mathrm{173}}^1\times {\mathrm{12601}}^1$

素因数の和:12785

約数の個数: 32

約数和(自身を含む): 197347320

約数和(自身を除く): 110148400

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 173, 346, 692, 865, 1384, 1730, 3460, 6920, 12601, 25202, 50404, 63005, 100808, 126010, 252020, 504040, 2179973, 4359946, 8719892, 10899865, 17439784, 21799730, 43599460, 87198920]

約数ペア:

[(1, 87198920), (2, 43599460), (4, 21799730), (5, 17439784), (8, 10899865), (10, 8719892), (20, 4359946), (40, 2179973), (173, 504040), (346, 252020), (692, 126010), (865, 100808), (1384, 63005), (1730, 50404), (3460, 25202), (6920, 12601)]