21569488

素因数分解:

$2^4\times {\mathrm{43}}^1\times {\mathrm{107}}^1\times {\mathrm{293}}^1$

素因数の和:451

約数の個数: 40

約数和(自身を含む): 43309728

約数和(自身を除く): 21740240

約数列:

[1, 2, 4, 8, 16, 43, 86, 107, 172, 214, 293, 344, 428, 586, 688, 856, 1172, 1712, 2344, 4601, 4688, 9202, 12599, 18404, 25198, 31351, 36808, 50396, 62702, 73616, 100792, 125404, 201584, 250808, 501616, 1348093, 2696186, 5392372, 10784744, 21569488]

約数ペア:

[(1, 21569488), (2, 10784744), (4, 5392372), (8, 2696186), (16, 1348093), (43, 501616), (86, 250808), (107, 201584), (172, 125404), (214, 100792), (293, 73616), (344, 62702), (428, 50396), (586, 36808), (688, 31351), (856, 25198), (1172, 18404), (1712, 12599), (2344, 9202), (4601, 4688)]