15990280

素因数分解:

$2^3\times 5^1\times {\mathrm{399757}}^1$

素因数の和:399768

約数の個数: 16

約数和(自身を含む): 35978220

約数和(自身を除く): 19987940

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 399757, 799514, 1599028, 1998785, 3198056, 3997570, 7995140, 15990280]

約数ペア:

[(1, 15990280), (2, 7995140), (4, 3997570), (5, 3198056), (8, 1998785), (10, 1599028), (20, 799514), (40, 399757)]