20638470

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{687949}}^1$

素因数の和:687959

約数の個数: 16

約数和(自身を含む): 49532400

約数和(自身を除く): 28893930

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 687949, 1375898, 2063847, 3439745, 4127694, 6879490, 10319235, 20638470]

約数ペア:

[(1, 20638470), (2, 10319235), (3, 6879490), (5, 4127694), (6, 3439745), (10, 2063847), (15, 1375898), (30, 687949)]