19817820

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{10009}}^1$

素因数の和:10035

約数の個数: 72

約数和(自身を含む): 65585520

約数和(自身を除く): 45767700

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 11, 12, 15, 18, 20, 22, 30, 33, 36, 44, 45, 55, 60, 66, 90, 99, 110, 132, 165, 180, 198, 220, 330, 396, 495, 660, 990, 1980, 10009, 20018, 30027, 40036, 50045, 60054, 90081, 100090, 110099, 120108, 150135, 180162, 200180, 220198, 300270, 330297, 360324, 440396, 450405, 550495, 600540, 660594, 900810, 990891, 1100990, 1321188, 1651485, 1801620, 1981782, 2201980, 3302970, 3963564, 4954455, 6605940, 9908910, 19817820]

約数ペア:

[(1, 19817820), (2, 9908910), (3, 6605940), (4, 4954455), (5, 3963564), (6, 3302970), (9, 2201980), (10, 1981782), (11, 1801620), (12, 1651485), (15, 1321188), (18, 1100990), (20, 990891), (22, 900810), (30, 660594), (33, 600540), (36, 550495), (44, 450405), (45, 440396), (55, 360324), (60, 330297), (66, 300270), (90, 220198), (99, 200180), (110, 180162), (132, 150135), (165, 120108), (180, 110099), (198, 100090), (220, 90081), (330, 60054), (396, 50045), (495, 40036), (660, 30027), (990, 20018), (1980, 10009)]