81977760

素因数分解:

$2^5\times 3^2\times 5^1\times {\mathrm{56929}}^1$

素因数の和:56950

約数の個数: 72

約数和(自身を含む): 279754020

約数和(自身を除く): 197776260

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, 56929, 113858, 170787, 227716, 284645, 341574, 455432, 512361, 569290, 683148, 853935, 910864, 1024722, 1138580, 1366296, 1707870, 1821728, 2049444, 2277160, 2561805, 2732592, 3415740, 4098888, 4554320, 5123610, 5465184, 6831480, 8197776, 9108640, 10247220, 13662960, 16395552, 20494440, 27325920, 40988880, 81977760]

約数ペア:

[(1, 81977760), (2, 40988880), (3, 27325920), (4, 20494440), (5, 16395552), (6, 13662960), (8, 10247220), (9, 9108640), (10, 8197776), (12, 6831480), (15, 5465184), (16, 5123610), (18, 4554320), (20, 4098888), (24, 3415740), (30, 2732592), (32, 2561805), (36, 2277160), (40, 2049444), (45, 1821728), (48, 1707870), (60, 1366296), (72, 1138580), (80, 1024722), (90, 910864), (96, 853935), (120, 683148), (144, 569290), (160, 512361), (180, 455432), (240, 341574), (288, 284645), (360, 227716), (480, 170787), (720, 113858), (1440, 56929)]