2020678640

素因数分解:

$2^4\times 5^1\times {\mathrm{3613}}^1\times {\mathrm{6991}}^1$

素因数の和:10617

約数の個数: 40

約数和(自身を含む): 4700050368

約数和(自身を除く): 2679371728

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 3613, 6991, 7226, 13982, 14452, 18065, 27964, 28904, 34955, 36130, 55928, 57808, 69910, 72260, 111856, 139820, 144520, 279640, 289040, 559280, 25258483, 50516966, 101033932, 126292415, 202067864, 252584830, 404135728, 505169660, 1010339320, 2020678640]

約数ペア:

[(1, 2020678640), (2, 1010339320), (4, 505169660), (5, 404135728), (8, 252584830), (10, 202067864), (16, 126292415), (20, 101033932), (40, 50516966), (80, 25258483), (3613, 559280), (6991, 289040), (7226, 279640), (13982, 144520), (14452, 139820), (18065, 111856), (27964, 72260), (28904, 69910), (34955, 57808), (36130, 55928)]