20661872

素因数分解:

$2^4\times 7^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{541}}^1$

素因数の和:598

約数の個数: 80

約数和(自身を含む): 51615744

約数和(自身を除く): 30953872

約数列:

[1, 2, 4, 7, 8, 11, 14, 16, 22, 28, 31, 44, 56, 62, 77, 88, 112, 124, 154, 176, 217, 248, 308, 341, 434, 496, 541, 616, 682, 868, 1082, 1232, 1364, 1736, 2164, 2387, 2728, 3472, 3787, 4328, 4774, 5456, 5951, 7574, 8656, 9548, 11902, 15148, 16771, 19096, 23804, 30296, 33542, 38192, 41657, 47608, 60592, 67084, 83314, 95216, 117397, 134168, 166628, 184481, 234794, 268336, 333256, 368962, 469588, 666512, 737924, 939176, 1291367, 1475848, 1878352, 2582734, 2951696, 5165468, 10330936, 20661872]

約数ペア:

[(1, 20661872), (2, 10330936), (4, 5165468), (7, 2951696), (8, 2582734), (11, 1878352), (14, 1475848), (16, 1291367), (22, 939176), (28, 737924), (31, 666512), (44, 469588), (56, 368962), (62, 333256), (77, 268336), (88, 234794), (112, 184481), (124, 166628), (154, 134168), (176, 117397), (217, 95216), (248, 83314), (308, 67084), (341, 60592), (434, 47608), (496, 41657), (541, 38192), (616, 33542), (682, 30296), (868, 23804), (1082, 19096), (1232, 16771), (1364, 15148), (1736, 11902), (2164, 9548), (2387, 8656), (2728, 7574), (3472, 5951), (3787, 5456), (4328, 4774)]