20681780

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{147727}}^1$

素因数の和:147743

約数の個数: 24

約数和(自身を含む): 49636608

約数和(自身を除く): 28954828

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 147727, 295454, 590908, 738635, 1034089, 1477270, 2068178, 2954540, 4136356, 5170445, 10340890, 20681780]

約数ペア:

[(1, 20681780), (2, 10340890), (4, 5170445), (5, 4136356), (7, 2954540), (10, 2068178), (14, 1477270), (20, 1034089), (28, 738635), (35, 590908), (70, 295454), (140, 147727)]