21228304

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{127}}^1\times {\mathrm{337}}^1$

素因数の和:503

約数の個数: 40

約数和(自身を含む): 42917888

約数和(自身を除く): 21689584

約数列:

[1, 2, 4, 8, 16, 31, 62, 124, 127, 248, 254, 337, 496, 508, 674, 1016, 1348, 2032, 2696, 3937, 5392, 7874, 10447, 15748, 20894, 31496, 41788, 42799, 62992, 83576, 85598, 167152, 171196, 342392, 684784, 1326769, 2653538, 5307076, 10614152, 21228304]

約数ペア:

[(1, 21228304), (2, 10614152), (4, 5307076), (8, 2653538), (16, 1326769), (31, 684784), (62, 342392), (124, 171196), (127, 167152), (248, 85598), (254, 83576), (337, 62992), (496, 42799), (508, 41788), (674, 31496), (1016, 20894), (1348, 15748), (2032, 10447), (2696, 7874), (3937, 5392)]