31885287

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{157}}^1\times {\mathrm{509}}^1$

素因数の和:695

約数の個数: 32

約数和(自身を含む): 51571200

約数和(自身を除く): 19685913

約数列:

[1, 3, 7, 19, 21, 57, 133, 157, 399, 471, 509, 1099, 1527, 2983, 3297, 3563, 8949, 9671, 10689, 20881, 29013, 62643, 67697, 79913, 203091, 239739, 559391, 1518347, 1678173, 4555041, 10628429, 31885287]

約数ペア:

[(1, 31885287), (3, 10628429), (7, 4555041), (19, 1678173), (21, 1518347), (57, 559391), (133, 239739), (157, 203091), (399, 79913), (471, 67697), (509, 62643), (1099, 29013), (1527, 20881), (2983, 10689), (3297, 9671), (3563, 8949)]