28221740

素因数分解:

$2^2\times 5^1\times {\mathrm{67}}^1\times {\mathrm{21061}}^1$

素因数の和:21137

約数の個数: 24

約数和(自身を含む): 60153072

約数和(自身を除く): 31931332

約数列:

[1, 2, 4, 5, 10, 20, 67, 134, 268, 335, 670, 1340, 21061, 42122, 84244, 105305, 210610, 421220, 1411087, 2822174, 5644348, 7055435, 14110870, 28221740]

約数ペア:

[(1, 28221740), (2, 14110870), (4, 7055435), (5, 5644348), (10, 2822174), (20, 1411087), (67, 421220), (134, 210610), (268, 105305), (335, 84244), (670, 42122), (1340, 21061)]