7990100

素因数分解:

$2^2\times 5^2\times {\mathrm{79901}}^1$

素因数の和:79915

約数の個数: 18

約数和(自身を含む): 17338734

約数和(自身を除く): 9348634

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 79901, 159802, 319604, 399505, 799010, 1598020, 1997525, 3995050, 7990100]

約数ペア:

[(1, 7990100), (2, 3995050), (4, 1997525), (5, 1598020), (10, 799010), (20, 399505), (25, 319604), (50, 159802), (100, 79901)]