402878889

素因数分解:

$3^2\times 7^1\times {\mathrm{313}}^1\times {\mathrm{20431}}^1$

素因数の和:20757

約数の個数: 24

約数和(自身を含む): 667227392

約数和(自身を除く): 264348503

約数列:

[1, 3, 7, 9, 21, 63, 313, 939, 2191, 2817, 6573, 19719, 20431, 61293, 143017, 183879, 429051, 1287153, 6394903, 19184709, 44764321, 57554127, 134292963, 402878889]

約数ペア:

[(1, 402878889), (3, 134292963), (7, 57554127), (9, 44764321), (21, 19184709), (63, 6394903), (313, 1287153), (939, 429051), (2191, 183879), (2817, 143017), (6573, 61293), (19719, 20431)]