81059960

素因数分解:

$2^3\times 5^1\times {\mathrm{47}}^1\times {\mathrm{43117}}^1$

素因数の和:43175

約数の個数: 32

約数和(自身を含む): 186269760

約数和(自身を除く): 105209800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 47, 94, 188, 235, 376, 470, 940, 1880, 43117, 86234, 172468, 215585, 344936, 431170, 862340, 1724680, 2026499, 4052998, 8105996, 10132495, 16211992, 20264990, 40529980, 81059960]

約数ペア:

[(1, 81059960), (2, 40529980), (4, 20264990), (5, 16211992), (8, 10132495), (10, 8105996), (20, 4052998), (40, 2026499), (47, 1724680), (94, 862340), (188, 431170), (235, 344936), (376, 215585), (470, 172468), (940, 86234), (1880, 43117)]