20688081791

素因数分解:

${\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{211}}^1\times {\mathrm{6977}}^1$

素因数の和:7271

約数の個数: 32

約数和(自身を含む): 23858731008

約数和(自身を除く): 3170649217

約数列:

[1, 13, 23, 47, 211, 299, 611, 1081, 2743, 4853, 6977, 9917, 14053, 63089, 90701, 128921, 160471, 228091, 327919, 1472147, 2086123, 2965183, 4262947, 7542137, 19137911, 33859381, 69190909, 98047781, 440171953, 899481817, 1591390907, 20688081791]

約数ペア:

[(1, 20688081791), (13, 1591390907), (23, 899481817), (47, 440171953), (211, 98047781), (299, 69190909), (611, 33859381), (1081, 19137911), (2743, 7542137), (4853, 4262947), (6977, 2965183), (9917, 2086123), (14053, 1472147), (63089, 327919), (90701, 228091), (128921, 160471)]