20956474

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{89}}^1\times {\mathrm{139}}^1$

素因数の和:259

約数の個数: 48

約数和(自身を含む): 40219200

約数和(自身を除く): 19262726

約数列:

[1, 2, 7, 11, 14, 22, 77, 89, 121, 139, 154, 178, 242, 278, 623, 847, 973, 979, 1246, 1529, 1694, 1946, 1958, 3058, 6853, 10703, 10769, 12371, 13706, 16819, 21406, 21538, 24742, 33638, 75383, 86597, 117733, 136081, 150766, 173194, 235466, 272162, 952567, 1496891, 1905134, 2993782, 10478237, 20956474]

約数ペア:

[(1, 20956474), (2, 10478237), (7, 2993782), (11, 1905134), (14, 1496891), (22, 952567), (77, 272162), (89, 235466), (121, 173194), (139, 150766), (154, 136081), (178, 117733), (242, 86597), (278, 75383), (623, 33638), (847, 24742), (973, 21538), (979, 21406), (1246, 16819), (1529, 13706), (1694, 12371), (1946, 10769), (1958, 10703), (3058, 6853)]