28507353

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{1931}}^1$

素因数の和:1997

約数の個数: 32

約数和(自身を含む): 46986240

約数和(自身を除く): 18478887

約数列:

[1, 3, 7, 19, 21, 37, 57, 111, 133, 259, 399, 703, 777, 1931, 2109, 4921, 5793, 13517, 14763, 36689, 40551, 71447, 110067, 214341, 256823, 500129, 770469, 1357493, 1500387, 4072479, 9502451, 28507353]

約数ペア:

[(1, 28507353), (3, 9502451), (7, 4072479), (19, 1500387), (21, 1357493), (37, 770469), (57, 500129), (111, 256823), (133, 214341), (259, 110067), (399, 71447), (703, 40551), (777, 36689), (1931, 14763), (2109, 13517), (4921, 5793)]