11987975

素因数分解:

$5^2\times {\mathrm{17}}^1\times {\mathrm{67}}^1\times {\mathrm{421}}^1$

素因数の和:515

約数の個数: 24

約数和(自身を含む): 16012368

約数和(自身を除く): 4024393

約数列:

[1, 5, 17, 25, 67, 85, 335, 421, 425, 1139, 1675, 2105, 5695, 7157, 10525, 28207, 28475, 35785, 141035, 178925, 479519, 705175, 2397595, 11987975]

約数ペア:

[(1, 11987975), (5, 2397595), (17, 705175), (25, 479519), (67, 178925), (85, 141035), (335, 35785), (421, 28475), (425, 28207), (1139, 10525), (1675, 7157), (2105, 5695)]