16520420

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{197}}^1\times {\mathrm{599}}^1$

素因数の和:812

約数の個数: 48

約数和(自身を含む): 39916800

約数和(自身を除く): 23396380

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 197, 394, 599, 788, 985, 1198, 1379, 1970, 2396, 2758, 2995, 3940, 4193, 5516, 5990, 6895, 8386, 11980, 13790, 16772, 20965, 27580, 41930, 83860, 118003, 236006, 472012, 590015, 826021, 1180030, 1652042, 2360060, 3304084, 4130105, 8260210, 16520420]

約数ペア:

[(1, 16520420), (2, 8260210), (4, 4130105), (5, 3304084), (7, 2360060), (10, 1652042), (14, 1180030), (20, 826021), (28, 590015), (35, 472012), (70, 236006), (140, 118003), (197, 83860), (394, 41930), (599, 27580), (788, 20965), (985, 16772), (1198, 13790), (1379, 11980), (1970, 8386), (2396, 6895), (2758, 5990), (2995, 5516), (3940, 4193)]