157211440

素因数分解:

$2^4\times 5^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{1987}}^1$

素因数の和:2066

約数の個数: 80

約数和(自身を含む): 390475008

約数和(自身を除く): 233263568

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 40, 43, 46, 80, 86, 92, 115, 172, 184, 215, 230, 344, 368, 430, 460, 688, 860, 920, 989, 1720, 1840, 1978, 1987, 3440, 3956, 3974, 4945, 7912, 7948, 9890, 9935, 15824, 15896, 19780, 19870, 31792, 39560, 39740, 45701, 79120, 79480, 85441, 91402, 158960, 170882, 182804, 228505, 341764, 365608, 427205, 457010, 683528, 731216, 854410, 914020, 1367056, 1708820, 1828040, 1965143, 3417640, 3656080, 3930286, 6835280, 7860572, 9825715, 15721144, 19651430, 31442288, 39302860, 78605720, 157211440]

約数ペア:

[(1, 157211440), (2, 78605720), (4, 39302860), (5, 31442288), (8, 19651430), (10, 15721144), (16, 9825715), (20, 7860572), (23, 6835280), (40, 3930286), (43, 3656080), (46, 3417640), (80, 1965143), (86, 1828040), (92, 1708820), (115, 1367056), (172, 914020), (184, 854410), (215, 731216), (230, 683528), (344, 457010), (368, 427205), (430, 365608), (460, 341764), (688, 228505), (860, 182804), (920, 170882), (989, 158960), (1720, 91402), (1840, 85441), (1978, 79480), (1987, 79120), (3440, 45701), (3956, 39740), (3974, 39560), (4945, 31792), (7912, 19870), (7948, 19780), (9890, 15896), (9935, 15824)]