15991490

素因数分解:

$2^1\times 5^1\times {\mathrm{239}}^1\times {\mathrm{6691}}^1$

素因数の和:6937

約数の個数: 16

約数和(自身を含む): 28909440

約数和(自身を除く): 12917950

約数列:

[1, 2, 5, 10, 239, 478, 1195, 2390, 6691, 13382, 33455, 66910, 1599149, 3198298, 7995745, 15991490]

約数ペア:

[(1, 15991490), (2, 7995745), (5, 3198298), (10, 1599149), (239, 66910), (478, 33455), (1195, 13382), (2390, 6691)]