20783546

素因数分解:

$2^1\times 7^2\times {\mathrm{29}}^1\times {\mathrm{71}}^1\times {\mathrm{103}}^1$

素因数の和:219

約数の個数: 48

約数和(自身を含む): 38413440

約数和(自身を除く): 17629894

約数列:

[1, 2, 7, 14, 29, 49, 58, 71, 98, 103, 142, 203, 206, 406, 497, 721, 994, 1421, 1442, 2059, 2842, 2987, 3479, 4118, 5047, 5974, 6958, 7313, 10094, 14413, 14626, 20909, 28826, 41818, 51191, 100891, 102382, 146363, 201782, 212077, 292726, 358337, 424154, 716674, 1484539, 2969078, 10391773, 20783546]

約数ペア:

[(1, 20783546), (2, 10391773), (7, 2969078), (14, 1484539), (29, 716674), (49, 424154), (58, 358337), (71, 292726), (98, 212077), (103, 201782), (142, 146363), (203, 102382), (206, 100891), (406, 51191), (497, 41818), (721, 28826), (994, 20909), (1421, 14626), (1442, 14413), (2059, 10094), (2842, 7313), (2987, 6958), (3479, 5974), (4118, 5047)]