21689288

素因数分解:

$2^3\times {\mathrm{401}}^1\times {\mathrm{6761}}^1$

素因数の和:7168

約数の個数: 16

約数和(自身を含む): 40774860

約数和(自身を除く): 19085572

約数列:

[1, 2, 4, 8, 401, 802, 1604, 3208, 6761, 13522, 27044, 54088, 2711161, 5422322, 10844644, 21689288]

約数ペア:

[(1, 21689288), (2, 10844644), (4, 5422322), (8, 2711161), (401, 54088), (802, 27044), (1604, 13522), (3208, 6761)]