20446780

素因数分解:

$2^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{12941}}^1$

素因数の和:13029

約数の個数: 24

約数和(自身を含む): 43485120

約数和(自身を除く): 23038340

約数列:

[1, 2, 4, 5, 10, 20, 79, 158, 316, 395, 790, 1580, 12941, 25882, 51764, 64705, 129410, 258820, 1022339, 2044678, 4089356, 5111695, 10223390, 20446780]

約数ペア:

[(1, 20446780), (2, 10223390), (4, 5111695), (5, 4089356), (10, 2044678), (20, 1022339), (79, 258820), (158, 129410), (316, 64705), (395, 51764), (790, 25882), (1580, 12941)]