21281512

素因数分解:

$2^3\times 7^1\times {\mathrm{37}}^1\times {\mathrm{10271}}^1$

素因数の和:10321

約数の個数: 32

約数和(自身を含む): 46840320

約数和(自身を除く): 25558808

約数列:

[1, 2, 4, 7, 8, 14, 28, 37, 56, 74, 148, 259, 296, 518, 1036, 2072, 10271, 20542, 41084, 71897, 82168, 143794, 287588, 380027, 575176, 760054, 1520108, 2660189, 3040216, 5320378, 10640756, 21281512]

約数ペア:

[(1, 21281512), (2, 10640756), (4, 5320378), (7, 3040216), (8, 2660189), (14, 1520108), (28, 760054), (37, 575176), (56, 380027), (74, 287588), (148, 143794), (259, 82168), (296, 71897), (518, 41084), (1036, 20542), (2072, 10271)]