21494242

素因数分解:

$2^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{127}}^1\times {\mathrm{157}}^1$

素因数の和:311

約数の個数: 48

約数和(自身を含む): 41499648

約数和(自身を除く): 20005406

約数列:

[1, 2, 7, 11, 14, 22, 49, 77, 98, 127, 154, 157, 254, 314, 539, 889, 1078, 1099, 1397, 1727, 1778, 2198, 2794, 3454, 6223, 7693, 9779, 12089, 12446, 15386, 19558, 19939, 24178, 39878, 68453, 84623, 136906, 139573, 169246, 219329, 279146, 438658, 977011, 1535303, 1954022, 3070606, 10747121, 21494242]

約数ペア:

[(1, 21494242), (2, 10747121), (7, 3070606), (11, 1954022), (14, 1535303), (22, 977011), (49, 438658), (77, 279146), (98, 219329), (127, 169246), (154, 139573), (157, 136906), (254, 84623), (314, 68453), (539, 39878), (889, 24178), (1078, 19939), (1099, 19558), (1397, 15386), (1727, 12446), (1778, 12089), (2198, 9779), (2794, 7693), (3454, 6223)]