19988771

素因数分解:

${\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{41}}^2\times {\mathrm{47}}^1$

素因数の和:163

約数の個数: 24

約数和(自身を含む): 23818752

約数和(自身を除く): 3829981

約数列:

[1, 11, 23, 41, 47, 253, 451, 517, 943, 1081, 1681, 1927, 10373, 11891, 18491, 21197, 38663, 44321, 79007, 425293, 487531, 869077, 1817161, 19988771]

約数ペア:

[(1, 19988771), (11, 1817161), (23, 869077), (41, 487531), (47, 425293), (253, 79007), (451, 44321), (517, 38663), (943, 21197), (1081, 18491), (1681, 11891), (1927, 10373)]