20647580

素因数分解:

$2^2\times 5^1\times {\mathrm{277}}^1\times {\mathrm{3727}}^1$

素因数の和:4013

約数の個数: 24

約数和(自身を含む): 43528128

約数和(自身を除く): 22880548

約数列:

[1, 2, 4, 5, 10, 20, 277, 554, 1108, 1385, 2770, 3727, 5540, 7454, 14908, 18635, 37270, 74540, 1032379, 2064758, 4129516, 5161895, 10323790, 20647580]

約数ペア:

[(1, 20647580), (2, 10323790), (4, 5161895), (5, 4129516), (10, 2064758), (20, 1032379), (277, 74540), (554, 37270), (1108, 18635), (1385, 14908), (2770, 7454), (3727, 5540)]