20726848

素因数分解:

$2^6\times {\mathrm{31}}^2\times {\mathrm{337}}^1$

素因数の和:411

約数の個数: 42

約数和(自身を含む): 42625518

約数和(自身を除く): 21898670

約数列:

[1, 2, 4, 8, 16, 31, 32, 62, 64, 124, 248, 337, 496, 674, 961, 992, 1348, 1922, 1984, 2696, 3844, 5392, 7688, 10447, 10784, 15376, 20894, 21568, 30752, 41788, 61504, 83576, 167152, 323857, 334304, 647714, 668608, 1295428, 2590856, 5181712, 10363424, 20726848]

約数ペア:

[(1, 20726848), (2, 10363424), (4, 5181712), (8, 2590856), (16, 1295428), (31, 668608), (32, 647714), (62, 334304), (64, 323857), (124, 167152), (248, 83576), (337, 61504), (496, 41788), (674, 30752), (961, 21568), (992, 20894), (1348, 15376), (1922, 10784), (1984, 10447), (2696, 7688), (3844, 5392)]