81400

素因数分解:

$2^3\times 5^2\times {\mathrm{11}}^1\times {\mathrm{37}}^1$

素因数の和:64

約数の個数: 48

約数和(自身を含む): 212040

約数和(自身を除く): 130640

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 25, 37, 40, 44, 50, 55, 74, 88, 100, 110, 148, 185, 200, 220, 275, 296, 370, 407, 440, 550, 740, 814, 925, 1100, 1480, 1628, 1850, 2035, 2200, 3256, 3700, 4070, 7400, 8140, 10175, 16280, 20350, 40700, 81400]

約数ペア:

[(1, 81400), (2, 40700), (4, 20350), (5, 16280), (8, 10175), (10, 8140), (11, 7400), (20, 4070), (22, 3700), (25, 3256), (37, 2200), (40, 2035), (44, 1850), (50, 1628), (55, 1480), (74, 1100), (88, 925), (100, 814), (110, 740), (148, 550), (185, 440), (200, 407), (220, 370), (275, 296)]