20855065

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{2851}}^1$

素因数の和:2893

約数の個数: 32

約数和(自身を含む): 32855040

約数和(自身を除く): 11999975

約数列:

[1, 5, 7, 11, 19, 35, 55, 77, 95, 133, 209, 385, 665, 1045, 1463, 2851, 7315, 14255, 19957, 31361, 54169, 99785, 156805, 219527, 270845, 379183, 595859, 1097635, 1895915, 2979295, 4171013, 20855065]

約数ペア:

[(1, 20855065), (5, 4171013), (7, 2979295), (11, 1895915), (19, 1097635), (35, 595859), (55, 379183), (77, 270845), (95, 219527), (133, 156805), (209, 99785), (385, 54169), (665, 31361), (1045, 19957), (1463, 14255), (2851, 7315)]