81576760

素因数分解:

$2^3\times 5^1\times {\mathrm{367}}^1\times {\mathrm{5557}}^1$

素因数の和:5935

約数の個数: 32

約数和(自身を含む): 184080960

約数和(自身を除く): 102504200

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 367, 734, 1468, 1835, 2936, 3670, 5557, 7340, 11114, 14680, 22228, 27785, 44456, 55570, 111140, 222280, 2039419, 4078838, 8157676, 10197095, 16315352, 20394190, 40788380, 81576760]

約数ペア:

[(1, 81576760), (2, 40788380), (4, 20394190), (5, 16315352), (8, 10197095), (10, 8157676), (20, 4078838), (40, 2039419), (367, 222280), (734, 111140), (1468, 55570), (1835, 44456), (2936, 27785), (3670, 22228), (5557, 14680), (7340, 11114)]