20988674

素因数分解:

$2^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{137}}^1\times {\mathrm{353}}^1$

素因数の和:530

約数の個数: 32

約数和(自身を含む): 37518336

約数和(自身を除く): 16529662

約数列:

[1, 2, 7, 14, 31, 62, 137, 217, 274, 353, 434, 706, 959, 1918, 2471, 4247, 4942, 8494, 10943, 21886, 29729, 48361, 59458, 76601, 96722, 153202, 338527, 677054, 1499191, 2998382, 10494337, 20988674]

約数ペア:

[(1, 20988674), (2, 10494337), (7, 2998382), (14, 1499191), (31, 677054), (62, 338527), (137, 153202), (217, 96722), (274, 76601), (353, 59458), (434, 48361), (706, 29729), (959, 21886), (1918, 10943), (2471, 8494), (4247, 4942)]