20877353

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{47}}^1\times {\mathrm{89}}^1$

素因数の和:197

約数の個数: 32

約数和(自身を含む): 26542080

約数和(自身を除く): 5664727

約数列:

[1, 7, 23, 31, 47, 89, 161, 217, 329, 623, 713, 1081, 1457, 2047, 2759, 4183, 4991, 7567, 10199, 14329, 19313, 29281, 33511, 63457, 96209, 129673, 234577, 444199, 673463, 907711, 2982479, 20877353]

約数ペア:

[(1, 20877353), (7, 2982479), (23, 907711), (31, 673463), (47, 444199), (89, 234577), (161, 129673), (217, 96209), (329, 63457), (623, 33511), (713, 29281), (1081, 19313), (1457, 14329), (2047, 10199), (2759, 7567), (4183, 4991)]