20003828

素因数分解:

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

素因数の和:372

約数の個数: 36

約数和(自身を含む): 38883852

約数和(自身を除く): 18880024

約数列:

[1, 2, 4, 13, 26, 37, 52, 74, 148, 281, 481, 562, 962, 1124, 1369, 1924, 2738, 3653, 5476, 7306, 10397, 14612, 17797, 20794, 35594, 41588, 71188, 135161, 270322, 384689, 540644, 769378, 1538756, 5000957, 10001914, 20003828]

約数ペア:

[(1, 20003828), (2, 10001914), (4, 5000957), (13, 1538756), (26, 769378), (37, 540644), (52, 384689), (74, 270322), (148, 135161), (281, 71188), (481, 41588), (562, 35594), (962, 20794), (1124, 17797), (1369, 14612), (1924, 10397), (2738, 7306), (3653, 5476)]