20639910

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{353}}^1\times {\mathrm{1949}}^1$

素因数の和:2312

約数の個数: 32

約数和(自身を含む): 49701600

約数和(自身を除く): 29061690

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 353, 706, 1059, 1765, 1949, 2118, 3530, 3898, 5295, 5847, 9745, 10590, 11694, 19490, 29235, 58470, 687997, 1375994, 2063991, 3439985, 4127982, 6879970, 10319955, 20639910]

約数ペア:

[(1, 20639910), (2, 10319955), (3, 6879970), (5, 4127982), (6, 3439985), (10, 2063991), (15, 1375994), (30, 687997), (353, 58470), (706, 29235), (1059, 19490), (1765, 11694), (1949, 10590), (2118, 9745), (3530, 5847), (3898, 5295)]