19712761.000000000

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{197}}^2$

素因数の和:449

約数の個数: 24

約数和(自身を含む): 149786880

約数和(自身を除く): 35494375

約数列:

[1, 5, 19, 31, 95, 155, 197, 589, 985, 2945, 3743, 6107, 18715, 30535, 38809, 116033, 194045, 580165, 737371, 1203079, 3686855, 6015395, 22858501, 114292505]

約数ペア:

[(1, 114292505), (5, 22858501), (19, 6015395), (31, 3686855), (95, 1203079), (155, 737371), (197, 580165), (589, 194045), (985, 116033), (2945, 38809), (3743, 30535), (6107, 18715)]