21563565

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{103}}^1\times {\mathrm{821}}^1$

素因数の和:949

約数の個数: 32

約数和(自身を含む): 36930816

約数和(自身を除く): 15367251

約数列:

[1, 3, 5, 15, 17, 51, 85, 103, 255, 309, 515, 821, 1545, 1751, 2463, 4105, 5253, 8755, 12315, 13957, 26265, 41871, 69785, 84563, 209355, 253689, 422815, 1268445, 1437571, 4312713, 7187855, 21563565]

約数ペア:

[(1, 21563565), (3, 7187855), (5, 4312713), (15, 1437571), (17, 1268445), (51, 422815), (85, 253689), (103, 209355), (255, 84563), (309, 69785), (515, 41871), (821, 26265), (1545, 13957), (1751, 12315), (2463, 8755), (4105, 5253)]