20398532

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{103}}^1\times {\mathrm{643}}^1$

素因数の和:768

約数の個数: 48

約数和(自身を含む): 45007872

約数和(自身を除く): 24609340

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 44, 77, 103, 154, 206, 308, 412, 643, 721, 1133, 1286, 1442, 2266, 2572, 2884, 4501, 4532, 7073, 7931, 9002, 14146, 15862, 18004, 28292, 31724, 49511, 66229, 99022, 132458, 198044, 264916, 463603, 728519, 927206, 1457038, 1854412, 2914076, 5099633, 10199266, 20398532]

約数ペア:

[(1, 20398532), (2, 10199266), (4, 5099633), (7, 2914076), (11, 1854412), (14, 1457038), (22, 927206), (28, 728519), (44, 463603), (77, 264916), (103, 198044), (154, 132458), (206, 99022), (308, 66229), (412, 49511), (643, 31724), (721, 28292), (1133, 18004), (1286, 15862), (1442, 14146), (2266, 9002), (2572, 7931), (2884, 7073), (4501, 4532)]