21659220

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{10939}}^1$

素因数の和:10965

約数の個数: 72

約数和(自身を含む): 71678880

約数和(自身を除く): 50019660

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, 10939, 21878, 32817, 43756, 54695, 65634, 98451, 109390, 120329, 131268, 164085, 196902, 218780, 240658, 328170, 360987, 393804, 481316, 492255, 601645, 656340, 721974, 984510, 1082961, 1203290, 1443948, 1804935, 1969020, 2165922, 2406580, 3609870, 4331844, 5414805, 7219740, 10829610, 21659220]

約数ペア:

[(1, 21659220), (2, 10829610), (3, 7219740), (4, 5414805), (5, 4331844), (6, 3609870), (9, 2406580), (10, 2165922), (11, 1969020), (12, 1804935), (15, 1443948), (18, 1203290), (20, 1082961), (22, 984510), (30, 721974), (33, 656340), (36, 601645), (44, 492255), (45, 481316), (55, 393804), (60, 360987), (66, 328170), (90, 240658), (99, 218780), (110, 196902), (132, 164085), (165, 131268), (180, 120329), (198, 109390), (220, 98451), (330, 65634), (396, 54695), (495, 43756), (660, 32817), (990, 21878), (1980, 10939)]