20180780

素因数分解:

$2^2\times 5^1\times {\mathrm{157}}^1\times {\mathrm{6427}}^1$

素因数の和:6593

約数の個数: 24

約数和(自身を含む): 42656208

約数和(自身を除く): 22475428

約数列:

[1, 2, 4, 5, 10, 20, 157, 314, 628, 785, 1570, 3140, 6427, 12854, 25708, 32135, 64270, 128540, 1009039, 2018078, 4036156, 5045195, 10090390, 20180780]

約数ペア:

[(1, 20180780), (2, 10090390), (4, 5045195), (5, 4036156), (10, 2018078), (20, 1009039), (157, 128540), (314, 64270), (628, 32135), (785, 25708), (1570, 12854), (3140, 6427)]