20745956

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{193}}^1\times {\mathrm{349}}^1$

素因数の和:564

約数の個数: 48

約数和(自身を含む): 45628800

約数和(自身を除く): 24882844

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 44, 77, 154, 193, 308, 349, 386, 698, 772, 1351, 1396, 2123, 2443, 2702, 3839, 4246, 4886, 5404, 7678, 8492, 9772, 14861, 15356, 26873, 29722, 53746, 59444, 67357, 107492, 134714, 269428, 471499, 740927, 942998, 1481854, 1885996, 2963708, 5186489, 10372978, 20745956]

約数ペア:

[(1, 20745956), (2, 10372978), (4, 5186489), (7, 2963708), (11, 1885996), (14, 1481854), (22, 942998), (28, 740927), (44, 471499), (77, 269428), (154, 134714), (193, 107492), (308, 67357), (349, 59444), (386, 53746), (698, 29722), (772, 26873), (1351, 15356), (1396, 14861), (2123, 9772), (2443, 8492), (2702, 7678), (3839, 5404), (4246, 4886)]