20512542260

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{197}}^1\times {\mathrm{743747}}^1$

素因数の和:743960

約数の個数: 48

約数和(自身を含む): 49480066944

約数和(自身を除く): 28967524684

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 197, 394, 788, 985, 1379, 1970, 2758, 3940, 5516, 6895, 13790, 27580, 743747, 1487494, 2974988, 3718735, 5206229, 7437470, 10412458, 14874940, 20824916, 26031145, 52062290, 104124580, 146518159, 293036318, 586072636, 732590795, 1025627113, 1465181590, 2051254226, 2930363180, 4102508452, 5128135565, 10256271130, 20512542260]

約数ペア:

[(1, 20512542260), (2, 10256271130), (4, 5128135565), (5, 4102508452), (7, 2930363180), (10, 2051254226), (14, 1465181590), (20, 1025627113), (28, 732590795), (35, 586072636), (70, 293036318), (140, 146518159), (197, 104124580), (394, 52062290), (788, 26031145), (985, 20824916), (1379, 14874940), (1970, 10412458), (2758, 7437470), (3940, 5206229), (5516, 3718735), (6895, 2974988), (13790, 1487494), (27580, 743747)]