21355438

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{79}}^1\times {\mathrm{281}}^1$

素因数の和:412

約数の個数: 32

約数和(自身を含む): 36005760

約数和(自身を除く): 14650322

約数列:

[1, 2, 13, 26, 37, 74, 79, 158, 281, 481, 562, 962, 1027, 2054, 2923, 3653, 5846, 7306, 10397, 20794, 22199, 37999, 44398, 75998, 135161, 270322, 288587, 577174, 821363, 1642726, 10677719, 21355438]

約数ペア:

[(1, 21355438), (2, 10677719), (13, 1642726), (26, 821363), (37, 577174), (74, 288587), (79, 270322), (158, 135161), (281, 75998), (481, 44398), (562, 37999), (962, 22199), (1027, 20794), (2054, 10397), (2923, 7306), (3653, 5846)]