19558820

素因数分解:

$2^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{12379}}^1$

素因数の和:12467

約数の個数: 24

約数和(自身を含む): 41596800

約数和(自身を除く): 22037980

約数列:

[1, 2, 4, 5, 10, 20, 79, 158, 316, 395, 790, 1580, 12379, 24758, 49516, 61895, 123790, 247580, 977941, 1955882, 3911764, 4889705, 9779410, 19558820]

約数ペア:

[(1, 19558820), (2, 9779410), (4, 4889705), (5, 3911764), (10, 1955882), (20, 977941), (79, 247580), (158, 123790), (316, 61895), (395, 49516), (790, 24758), (1580, 12379)]