20512421130257

素因数分解:

$7^2\times {\mathrm{79}}^1\times {\mathrm{83}}^1\times {\mathrm{89}}^1\times {\mathrm{717341}}^1$

素因数の和:717606

約数の個数: 48

約数和(自身を含む): 24729361171200

約数和(自身を除く): 4216940040943

約数列:

[1, 7, 49, 79, 83, 89, 553, 581, 623, 3871, 4067, 4361, 6557, 7031, 7387, 45899, 49217, 51709, 321293, 344519, 361963, 583573, 717341, 4085011, 5021387, 28595077, 35149709, 56669939, 59539303, 63843349, 396689573, 416775121, 446903443, 2776827011, 2917425847, 3128324101, 4703604937, 5043624571, 5298997967, 32925234559, 35305371997, 37092985769, 230476641913, 247137603979, 259650900383, 418620839393, 2930345875751, 20512421130257]

約数ペア:

[(1, 20512421130257), (7, 2930345875751), (49, 418620839393), (79, 259650900383), (83, 247137603979), (89, 230476641913), (553, 37092985769), (581, 35305371997), (623, 32925234559), (3871, 5298997967), (4067, 5043624571), (4361, 4703604937), (6557, 3128324101), (7031, 2917425847), (7387, 2776827011), (45899, 446903443), (49217, 416775121), (51709, 396689573), (321293, 63843349), (344519, 59539303), (361963, 56669939), (583573, 35149709), (717341, 28595077), (4085011, 5021387)]