20507452

素因数分解:

$2^2\times 7^1\times {\mathrm{73}}^1\times {\mathrm{79}}^1\times {\mathrm{127}}^1$

素因数の和:290

約数の個数: 48

約数和(自身を含む): 42434560

約数和(自身を除く): 21927108

約数列:

[1, 2, 4, 7, 14, 28, 73, 79, 127, 146, 158, 254, 292, 316, 508, 511, 553, 889, 1022, 1106, 1778, 2044, 2212, 3556, 5767, 9271, 10033, 11534, 18542, 20066, 23068, 37084, 40132, 40369, 64897, 70231, 80738, 129794, 140462, 161476, 259588, 280924, 732409, 1464818, 2929636, 5126863, 10253726, 20507452]

約数ペア:

[(1, 20507452), (2, 10253726), (4, 5126863), (7, 2929636), (14, 1464818), (28, 732409), (73, 280924), (79, 259588), (127, 161476), (146, 140462), (158, 129794), (254, 80738), (292, 70231), (316, 64897), (508, 40369), (511, 40132), (553, 37084), (889, 23068), (1022, 20066), (1106, 18542), (1778, 11534), (2044, 10033), (2212, 9271), (3556, 5767)]