20478766

素因数分解:

$2^1\times 7^2\times {\mathrm{11}}^3\times {\mathrm{157}}^1$

素因数の和:206

約数の個数: 48

約数和(自身を含む): 39554352

約数和(自身を除く): 19075586

約数列:

[1, 2, 7, 11, 14, 22, 49, 77, 98, 121, 154, 157, 242, 314, 539, 847, 1078, 1099, 1331, 1694, 1727, 2198, 2662, 3454, 5929, 7693, 9317, 11858, 12089, 15386, 18634, 18997, 24178, 37994, 65219, 84623, 130438, 132979, 169246, 208967, 265958, 417934, 930853, 1462769, 1861706, 2925538, 10239383, 20478766]

約数ペア:

[(1, 20478766), (2, 10239383), (7, 2925538), (11, 1861706), (14, 1462769), (22, 930853), (49, 417934), (77, 265958), (98, 208967), (121, 169246), (154, 132979), (157, 130438), (242, 84623), (314, 65219), (539, 37994), (847, 24178), (1078, 18997), (1099, 18634), (1331, 15386), (1694, 12089), (1727, 11858), (2198, 9317), (2662, 7693), (3454, 5929)]