17922740

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{1987}}^1$

素因数の和:2048

約数の個数: 48

約数和(自身を含む): 42081984

約数和(自身を除く): 24159244

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 41, 44, 55, 82, 110, 164, 205, 220, 410, 451, 820, 902, 1804, 1987, 2255, 3974, 4510, 7948, 9020, 9935, 19870, 21857, 39740, 43714, 81467, 87428, 109285, 162934, 218570, 325868, 407335, 437140, 814670, 896137, 1629340, 1792274, 3584548, 4480685, 8961370, 17922740]

約数ペア:

[(1, 17922740), (2, 8961370), (4, 4480685), (5, 3584548), (10, 1792274), (11, 1629340), (20, 896137), (22, 814670), (41, 437140), (44, 407335), (55, 325868), (82, 218570), (110, 162934), (164, 109285), (205, 87428), (220, 81467), (410, 43714), (451, 39740), (820, 21857), (902, 19870), (1804, 9935), (1987, 9020), (2255, 7948), (3974, 4510)]