28397390

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{405677}}^1$

素因数の和:405691

約数の個数: 16

約数和(自身を含む): 58417632

約数和(自身を除く): 30020242

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 405677, 811354, 2028385, 2839739, 4056770, 5679478, 14198695, 28397390]

約数ペア:

[(1, 28397390), (2, 14198695), (5, 5679478), (7, 4056770), (10, 2839739), (14, 2028385), (35, 811354), (70, 405677)]