20514640

素因数分解:

$2^4\times 5^1\times {\mathrm{347}}^1\times {\mathrm{739}}^1$

素因数の和:1099

約数の個数: 40

約数和(自身を含む): 47898720

約数和(自身を除く): 27384080

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 347, 694, 739, 1388, 1478, 1735, 2776, 2956, 3470, 3695, 5552, 5912, 6940, 7390, 11824, 13880, 14780, 27760, 29560, 59120, 256433, 512866, 1025732, 1282165, 2051464, 2564330, 4102928, 5128660, 10257320, 20514640]

約数ペア:

[(1, 20514640), (2, 10257320), (4, 5128660), (5, 4102928), (8, 2564330), (10, 2051464), (16, 1282165), (20, 1025732), (40, 512866), (80, 256433), (347, 59120), (694, 29560), (739, 27760), (1388, 14780), (1478, 13880), (1735, 11824), (2776, 7390), (2956, 6940), (3470, 5912), (3695, 5552)]