21843280

素因数分解:

$2^4\times 5^1\times {\mathrm{137}}^1\times {\mathrm{1993}}^1$

素因数の和:2143

約数の個数: 40

約数和(自身を含む): 51181992

約数和(自身を除く): 29338712

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 137, 274, 548, 685, 1096, 1370, 1993, 2192, 2740, 3986, 5480, 7972, 9965, 10960, 15944, 19930, 31888, 39860, 79720, 159440, 273041, 546082, 1092164, 1365205, 2184328, 2730410, 4368656, 5460820, 10921640, 21843280]

約数ペア:

[(1, 21843280), (2, 10921640), (4, 5460820), (5, 4368656), (8, 2730410), (10, 2184328), (16, 1365205), (20, 1092164), (40, 546082), (80, 273041), (137, 159440), (274, 79720), (548, 39860), (685, 31888), (1096, 19930), (1370, 15944), (1993, 10960), (2192, 9965), (2740, 7972), (3986, 5480)]