21957480

素因数分解:

$2^3\times 3^7\times 5^1\times {\mathrm{251}}^1$

素因数の和:283

約数の個数: 128

約数和(自身を含む): 74390400

約数和(自身を除く): 52432920

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 27, 30, 36, 40, 45, 54, 60, 72, 81, 90, 108, 120, 135, 162, 180, 216, 243, 251, 270, 324, 360, 405, 486, 502, 540, 648, 729, 753, 810, 972, 1004, 1080, 1215, 1255, 1458, 1506, 1620, 1944, 2008, 2187, 2259, 2430, 2510, 2916, 3012, 3240, 3645, 3765, 4374, 4518, 4860, 5020, 5832, 6024, 6777, 7290, 7530, 8748, 9036, 9720, 10040, 10935, 11295, 13554, 14580, 15060, 17496, 18072, 20331, 21870, 22590, 27108, 29160, 30120, 33885, 40662, 43740, 45180, 54216, 60993, 67770, 81324, 87480, 90360, 101655, 121986, 135540, 162648, 182979, 203310, 243972, 271080, 304965, 365958, 406620, 487944, 548937, 609930, 731916, 813240, 914895, 1097874, 1219860, 1463832, 1829790, 2195748, 2439720, 2744685, 3659580, 4391496, 5489370, 7319160, 10978740, 21957480]

約数ペア:

[(1, 21957480), (2, 10978740), (3, 7319160), (4, 5489370), (5, 4391496), (6, 3659580), (8, 2744685), (9, 2439720), (10, 2195748), (12, 1829790), (15, 1463832), (18, 1219860), (20, 1097874), (24, 914895), (27, 813240), (30, 731916), (36, 609930), (40, 548937), (45, 487944), (54, 406620), (60, 365958), (72, 304965), (81, 271080), (90, 243972), (108, 203310), (120, 182979), (135, 162648), (162, 135540), (180, 121986), (216, 101655), (243, 90360), (251, 87480), (270, 81324), (324, 67770), (360, 60993), (405, 54216), (486, 45180), (502, 43740), (540, 40662), (648, 33885), (729, 30120), (753, 29160), (810, 27108), (972, 22590), (1004, 21870), (1080, 20331), (1215, 18072), (1255, 17496), (1458, 15060), (1506, 14580), (1620, 13554), (1944, 11295), (2008, 10935), (2187, 10040), (2259, 9720), (2430, 9036), (2510, 8748), (2916, 7530), (3012, 7290), (3240, 6777), (3645, 6024), (3765, 5832), (4374, 5020), (4518, 4860)]