80991640

素因数分解:

$2^3\times 5^1\times {\mathrm{191}}^1\times {\mathrm{10601}}^1$

素因数の和:10803

約数の個数: 32

約数和(自身を含む): 183202560

約数和(自身を除く): 102210920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 191, 382, 764, 955, 1528, 1910, 3820, 7640, 10601, 21202, 42404, 53005, 84808, 106010, 212020, 424040, 2024791, 4049582, 8099164, 10123955, 16198328, 20247910, 40495820, 80991640]

約数ペア:

[(1, 80991640), (2, 40495820), (4, 20247910), (5, 16198328), (8, 10123955), (10, 8099164), (20, 4049582), (40, 2024791), (191, 424040), (382, 212020), (764, 106010), (955, 84808), (1528, 53005), (1910, 42404), (3820, 21202), (7640, 10601)]