71810680

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{43787}}^1$

素因数の和:43839

約数の個数: 32

約数和(自身を含む): 165518640

約数和(自身を除く): 93707960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 43787, 87574, 175148, 218935, 350296, 437870, 875740, 1751480, 1795267, 3590534, 7181068, 8976335, 14362136, 17952670, 35905340, 71810680]

約数ペア:

[(1, 71810680), (2, 35905340), (4, 17952670), (5, 14362136), (8, 8976335), (10, 7181068), (20, 3590534), (40, 1795267), (41, 1751480), (82, 875740), (164, 437870), (205, 350296), (328, 218935), (410, 175148), (820, 87574), (1640, 43787)]