21315788

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{9533}}^1$

素因数の和:9593

約数の個数: 24

約数和(自身を含む): 41110608

約数和(自身を除く): 19794820

約数列:

[1, 2, 4, 13, 26, 43, 52, 86, 172, 559, 1118, 2236, 9533, 19066, 38132, 123929, 247858, 409919, 495716, 819838, 1639676, 5328947, 10657894, 21315788]

約数ペア:

[(1, 21315788), (2, 10657894), (4, 5328947), (13, 1639676), (26, 819838), (43, 495716), (52, 409919), (86, 247858), (172, 123929), (559, 38132), (1118, 19066), (2236, 9533)]