19933991

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{79}}^1\times {\mathrm{113}}^1$

素因数の和:239

約数の個数: 32

約数和(自身を含む): 26265600

約数和(自身を除く): 6331609

約数列:

[1, 7, 11, 29, 77, 79, 113, 203, 319, 553, 791, 869, 1243, 2233, 2291, 3277, 6083, 8701, 8927, 16037, 22939, 25201, 36047, 62489, 98197, 176407, 252329, 258883, 687379, 1812181, 2847713, 19933991]

約数ペア:

[(1, 19933991), (7, 2847713), (11, 1812181), (29, 687379), (77, 258883), (79, 252329), (113, 176407), (203, 98197), (319, 62489), (553, 36047), (791, 25201), (869, 22939), (1243, 16037), (2233, 8927), (2291, 8701), (3277, 6083)]