15891280

素因数分解:

$2^4\times 5^1\times {\mathrm{198641}}^1$

素因数の和:198654

約数の個数: 20

約数和(自身を含む): 36947412

約数和(自身を除く): 21056132

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 198641, 397282, 794564, 993205, 1589128, 1986410, 3178256, 3972820, 7945640, 15891280]

約数ペア:

[(1, 15891280), (2, 7945640), (4, 3972820), (5, 3178256), (8, 1986410), (10, 1589128), (16, 993205), (20, 794564), (40, 397282), (80, 198641)]