21188880

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{29429}}^1$

素因数の和:29448

約数の個数: 60

約数和(自身を含む): 71161740

約数和(自身を除く): 49972860

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, 29429, 58858, 88287, 117716, 147145, 176574, 235432, 264861, 294290, 353148, 441435, 470864, 529722, 588580, 706296, 882870, 1059444, 1177160, 1324305, 1412592, 1765740, 2118888, 2354320, 2648610, 3531480, 4237776, 5297220, 7062960, 10594440, 21188880]

約数ペア:

[(1, 21188880), (2, 10594440), (3, 7062960), (4, 5297220), (5, 4237776), (6, 3531480), (8, 2648610), (9, 2354320), (10, 2118888), (12, 1765740), (15, 1412592), (16, 1324305), (18, 1177160), (20, 1059444), (24, 882870), (30, 706296), (36, 588580), (40, 529722), (45, 470864), (48, 441435), (60, 353148), (72, 294290), (80, 264861), (90, 235432), (120, 176574), (144, 147145), (180, 117716), (240, 88287), (360, 58858), (720, 29429)]