19606987990

素因数分解:

$2^1\times 5^1\times {\mathrm{251}}^1\times {\mathrm{7811549}}^1$

素因数の和:7811807

約数の個数: 16

約数和(自身を含む): 35433190800

約数和(自身を除く): 15826202810

約数列:

[1, 2, 5, 10, 251, 502, 1255, 2510, 7811549, 15623098, 39057745, 78115490, 1960698799, 3921397598, 9803493995, 19606987990]

約数ペア:

[(1, 19606987990), (2, 9803493995), (5, 3921397598), (10, 1960698799), (251, 78115490), (502, 39057745), (1255, 15623098), (2510, 7811549)]