28112540

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{97}}^1\times {\mathrm{337}}^1$

素因数の和:486

約数の個数: 48

約数和(自身を含む): 61213152

約数和(自身を除く): 33100612

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 97, 172, 194, 215, 337, 388, 430, 485, 674, 860, 970, 1348, 1685, 1940, 3370, 4171, 6740, 8342, 14491, 16684, 20855, 28982, 32689, 41710, 57964, 65378, 72455, 83420, 130756, 144910, 163445, 289820, 326890, 653780, 1405627, 2811254, 5622508, 7028135, 14056270, 28112540]

約数ペア:

[(1, 28112540), (2, 14056270), (4, 7028135), (5, 5622508), (10, 2811254), (20, 1405627), (43, 653780), (86, 326890), (97, 289820), (172, 163445), (194, 144910), (215, 130756), (337, 83420), (388, 72455), (430, 65378), (485, 57964), (674, 41710), (860, 32689), (970, 28982), (1348, 20855), (1685, 16684), (1940, 14491), (3370, 8342), (4171, 6740)]