20684880

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{28729}}^1$

素因数の和:28748

約数の個数: 60

約数和(自身を含む): 69469140

約数和(自身を除く): 48784260

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 45, 48, 60, 72, 80, 90, 120, 144, 180, 240, 360, 720, 28729, 57458, 86187, 114916, 143645, 172374, 229832, 258561, 287290, 344748, 430935, 459664, 517122, 574580, 689496, 861870, 1034244, 1149160, 1292805, 1378992, 1723740, 2068488, 2298320, 2585610, 3447480, 4136976, 5171220, 6894960, 10342440, 20684880]

約数ペア:

[(1, 20684880), (2, 10342440), (3, 6894960), (4, 5171220), (5, 4136976), (6, 3447480), (8, 2585610), (9, 2298320), (10, 2068488), (12, 1723740), (15, 1378992), (16, 1292805), (18, 1149160), (20, 1034244), (24, 861870), (30, 689496), (36, 574580), (40, 517122), (45, 459664), (48, 430935), (60, 344748), (72, 287290), (80, 258561), (90, 229832), (120, 172374), (144, 143645), (180, 114916), (240, 86187), (360, 57458), (720, 28729)]