20088740

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{71}}^1$

素因数の和:177

約数の個数: 96

約数和(自身を含む): 51093504

約数和(自身を除く): 31004764

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 43, 47, 70, 71, 86, 94, 140, 142, 172, 188, 215, 235, 284, 301, 329, 355, 430, 470, 497, 602, 658, 710, 860, 940, 994, 1204, 1316, 1420, 1505, 1645, 1988, 2021, 2485, 3010, 3053, 3290, 3337, 4042, 4970, 6020, 6106, 6580, 6674, 8084, 9940, 10105, 12212, 13348, 14147, 15265, 16685, 20210, 21371, 23359, 28294, 30530, 33370, 40420, 42742, 46718, 56588, 61060, 66740, 70735, 85484, 93436, 106855, 116795, 141470, 143491, 213710, 233590, 282940, 286982, 427420, 467180, 573964, 717455, 1004437, 1434910, 2008874, 2869820, 4017748, 5022185, 10044370, 20088740]

約数ペア:

[(1, 20088740), (2, 10044370), (4, 5022185), (5, 4017748), (7, 2869820), (10, 2008874), (14, 1434910), (20, 1004437), (28, 717455), (35, 573964), (43, 467180), (47, 427420), (70, 286982), (71, 282940), (86, 233590), (94, 213710), (140, 143491), (142, 141470), (172, 116795), (188, 106855), (215, 93436), (235, 85484), (284, 70735), (301, 66740), (329, 61060), (355, 56588), (430, 46718), (470, 42742), (497, 40420), (602, 33370), (658, 30530), (710, 28294), (860, 23359), (940, 21371), (994, 20210), (1204, 16685), (1316, 15265), (1420, 14147), (1505, 13348), (1645, 12212), (1988, 10105), (2021, 9940), (2485, 8084), (3010, 6674), (3053, 6580), (3290, 6106), (3337, 6020), (4042, 4970)]