21281760

素因数分解:

$2^5\times 3^2\times 5^1\times {\mathrm{14779}}^1$

素因数の和:14800

約数の個数: 72

約数和(自身を含む): 72628920

約数和(自身を除く): 51347160

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 32, 36, 40, 45, 48, 60, 72, 80, 90, 96, 120, 144, 160, 180, 240, 288, 360, 480, 720, 1440, 14779, 29558, 44337, 59116, 73895, 88674, 118232, 133011, 147790, 177348, 221685, 236464, 266022, 295580, 354696, 443370, 472928, 532044, 591160, 665055, 709392, 886740, 1064088, 1182320, 1330110, 1418784, 1773480, 2128176, 2364640, 2660220, 3546960, 4256352, 5320440, 7093920, 10640880, 21281760]

約数ペア:

[(1, 21281760), (2, 10640880), (3, 7093920), (4, 5320440), (5, 4256352), (6, 3546960), (8, 2660220), (9, 2364640), (10, 2128176), (12, 1773480), (15, 1418784), (16, 1330110), (18, 1182320), (20, 1064088), (24, 886740), (30, 709392), (32, 665055), (36, 591160), (40, 532044), (45, 472928), (48, 443370), (60, 354696), (72, 295580), (80, 266022), (90, 236464), (96, 221685), (120, 177348), (144, 147790), (160, 133011), (180, 118232), (240, 88674), (288, 73895), (360, 59116), (480, 44337), (720, 29558), (1440, 14779)]