81486320

素因数分解:

$2^4\times 5^1\times {\mathrm{971}}^1\times {\mathrm{1049}}^1$

素因数の和:2033

約数の個数: 40

約数和(自身を含む): 189831600

約数和(自身を除く): 108345280

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 971, 1049, 1942, 2098, 3884, 4196, 4855, 5245, 7768, 8392, 9710, 10490, 15536, 16784, 19420, 20980, 38840, 41960, 77680, 83920, 1018579, 2037158, 4074316, 5092895, 8148632, 10185790, 16297264, 20371580, 40743160, 81486320]

約数ペア:

[(1, 81486320), (2, 40743160), (4, 20371580), (5, 16297264), (8, 10185790), (10, 8148632), (16, 5092895), (20, 4074316), (40, 2037158), (80, 1018579), (971, 83920), (1049, 77680), (1942, 41960), (2098, 38840), (3884, 20980), (4196, 19420), (4855, 16784), (5245, 15536), (7768, 10490), (8392, 9710)]