638860130

素因数分解:

$2^1\times 5^1\times {\mathrm{37}}^1\times {\mathrm{71}}^1\times {\mathrm{83}}^1\times {\mathrm{293}}^1$

素因数の和:491

約数の個数: 64

約数和(自身を含む): 1216228608

約数和(自身を除く): 577368478

約数列:

[1, 2, 5, 10, 37, 71, 74, 83, 142, 166, 185, 293, 355, 370, 415, 586, 710, 830, 1465, 2627, 2930, 3071, 5254, 5893, 6142, 10841, 11786, 13135, 15355, 20803, 21682, 24319, 26270, 29465, 30710, 41606, 48638, 54205, 58930, 104015, 108410, 121595, 208030, 218041, 243190, 436082, 769711, 899803, 1090205, 1539422, 1726649, 1799606, 2180410, 3453298, 3848555, 4499015, 7697110, 8633245, 8998030, 17266490, 63886013, 127772026, 319430065, 638860130]

約数ペア:

[(1, 638860130), (2, 319430065), (5, 127772026), (10, 63886013), (37, 17266490), (71, 8998030), (74, 8633245), (83, 7697110), (142, 4499015), (166, 3848555), (185, 3453298), (293, 2180410), (355, 1799606), (370, 1726649), (415, 1539422), (586, 1090205), (710, 899803), (830, 769711), (1465, 436082), (2627, 243190), (2930, 218041), (3071, 208030), (5254, 121595), (5893, 108410), (6142, 104015), (10841, 58930), (11786, 54205), (13135, 48638), (15355, 41606), (20803, 30710), (21682, 29465), (24319, 26270)]