19656560

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{3191}}^1$

素因数の和:3222

約数の個数: 80

約数和(自身を含む): 56996352

約数和(自身を除く): 37339792

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 16, 20, 22, 28, 35, 40, 44, 55, 56, 70, 77, 80, 88, 110, 112, 140, 154, 176, 220, 280, 308, 385, 440, 560, 616, 770, 880, 1232, 1540, 3080, 3191, 6160, 6382, 12764, 15955, 22337, 25528, 31910, 35101, 44674, 51056, 63820, 70202, 89348, 111685, 127640, 140404, 175505, 178696, 223370, 245707, 255280, 280808, 351010, 357392, 446740, 491414, 561616, 702020, 893480, 982828, 1228535, 1404040, 1786960, 1965656, 2457070, 2808080, 3931312, 4914140, 9828280, 19656560]

約数ペア:

[(1, 19656560), (2, 9828280), (4, 4914140), (5, 3931312), (7, 2808080), (8, 2457070), (10, 1965656), (11, 1786960), (14, 1404040), (16, 1228535), (20, 982828), (22, 893480), (28, 702020), (35, 561616), (40, 491414), (44, 446740), (55, 357392), (56, 351010), (70, 280808), (77, 255280), (80, 245707), (88, 223370), (110, 178696), (112, 175505), (140, 140404), (154, 127640), (176, 111685), (220, 89348), (280, 70202), (308, 63820), (385, 51056), (440, 44674), (560, 35101), (616, 31910), (770, 25528), (880, 22337), (1232, 15955), (1540, 12764), (3080, 6382), (3191, 6160)]