316168640

素因数分解:

$2^6\times 5^1\times {\mathrm{991}}^1\times {\mathrm{997}}^1$

素因数の和:2005

約数の個数: 56

約数和(自身を含む): 754392192

約数和(自身を除く): 438223552

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 991, 997, 1982, 1994, 3964, 3988, 4955, 4985, 7928, 7976, 9910, 9970, 15856, 15952, 19820, 19940, 31712, 31904, 39640, 39880, 63424, 63808, 79280, 79760, 158560, 159520, 317120, 319040, 988027, 1976054, 3952108, 4940135, 7904216, 9880270, 15808432, 19760540, 31616864, 39521080, 63233728, 79042160, 158084320, 316168640]

約数ペア:

[(1, 316168640), (2, 158084320), (4, 79042160), (5, 63233728), (8, 39521080), (10, 31616864), (16, 19760540), (20, 15808432), (32, 9880270), (40, 7904216), (64, 4940135), (80, 3952108), (160, 1976054), (320, 988027), (991, 319040), (997, 317120), (1982, 159520), (1994, 158560), (3964, 79760), (3988, 79280), (4955, 63808), (4985, 63424), (7928, 39880), (7976, 39640), (9910, 31904), (9970, 31712), (15856, 19940), (15952, 19820)]