20309408

素因数分解:

$2^5\times 7^1\times {\mathrm{71}}^1\times {\mathrm{1277}}^1$

素因数の和:1365

約数の個数: 48

約数和(自身を含む): 46376064

約数和(自身を除く): 26066656

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 71, 112, 142, 224, 284, 497, 568, 994, 1136, 1277, 1988, 2272, 2554, 3976, 5108, 7952, 8939, 10216, 15904, 17878, 20432, 35756, 40864, 71512, 90667, 143024, 181334, 286048, 362668, 634669, 725336, 1269338, 1450672, 2538676, 2901344, 5077352, 10154704, 20309408]

約数ペア:

[(1, 20309408), (2, 10154704), (4, 5077352), (7, 2901344), (8, 2538676), (14, 1450672), (16, 1269338), (28, 725336), (32, 634669), (56, 362668), (71, 286048), (112, 181334), (142, 143024), (224, 90667), (284, 71512), (497, 40864), (568, 35756), (994, 20432), (1136, 17878), (1277, 15904), (1988, 10216), (2272, 8939), (2554, 7952), (3976, 5108)]