20955781

素因数分解:

$7^2\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{2287}}^1$

素因数の和:2329

約数の個数: 24

約数和(自身を含む): 28169856

約数和(自身を除く): 7214075

約数列:

[1, 7, 11, 17, 49, 77, 119, 187, 539, 833, 1309, 2287, 9163, 16009, 25157, 38879, 112063, 176099, 272153, 427669, 1232693, 1905071, 2993683, 20955781]

約数ペア:

[(1, 20955781), (7, 2993683), (11, 1905071), (17, 1232693), (49, 427669), (77, 272153), (119, 176099), (187, 112063), (539, 38879), (833, 25157), (1309, 16009), (2287, 9163)]